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Probing Physics beyond the Standard Model from Molecules

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Publications

A supersonic laser ablation beam source with narrow velocity spreads

Author(s): P. Aggarwal, H.L. Bethlem, A. Boeschoten, A. Borschevsky, K. Esajas, Y. Hao, S. Hoekstra, K. Jungmann, V.R. Marshall, T.B. Meijknecht, M.C. Mooij, R.G.E. Timmermans, A. Touwen, W. Ubachs, S.M. Vermeulen, L. Willmann, Y. Yin, A. Zapara
Published in: A supersonic laser ablation beam source with narrow velocity spreads, 92, 2021, Page(s) 033202, ISSN 0034-6748
Publisher: American Institute of Physics
DOI: 10.1063/5.0035568

High accuracy theoretical investigations of CaF, SrF, and BaF and implications for laser-cooling

Author(s): Y. Hao, L.F. Pasteka, L. Visscher, P. Aggarwal, H.L. Bethlem, A. Boeschoten, A. Borschevsky, M. Denis, K. Esajas, S. Hoekstra, K. Jungmann, V.R. Marshall, Th.B. Meijknecht, M.C. Mooij, R.G.E. Timmermans, A. Touwen, W. Ubachs, L. Willmann, Y. Yin, A. Zapara
Published in: Journal of Chemical Physics, 151, 2019, Page(s) 034302, ISSN 0021-9606
Publisher: American Institute of Physics
DOI: 10.1063/1.5098540

Deep-Ultraviolet Frequency Metrology of H2 for Tests of Molecular Quantum Theory

Author(s): R.K. Altmann, L.S. Dreissen, E.J. Salumbides, W. Ubachs, K.S.E. Eikema
Published in: Physical Review Letters, 120, 2018, Page(s) 043204, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.120.043204

Measuring the electric dipole moment of the electron in BaF

Author(s): P. Aggarwal, H.L. Bethlem, A. Borschevsky, M. Denis, K. Esajas, P.A.B. Haase, Y. Hao, S. Hoekstra, K. Jungmann, T.B. Meijknecht, M.C. Mooij, R.G.E. Timmermans, W. Ubachs, L. Willmann, A. Zapara
Published in: European Physical Journal D, 72, 2018, Page(s) 197, ISSN 1434-6079
Publisher: Springer
DOI: 10.1140/epjd/e2018-90192-9

Experimental and theoretical studies of the nps 1Su+ and nppi 1Pu+ (n >= 4, N'=1-6) states of D2: energies, natural widths, absorption line intensities, and dynamics

Author(s): M. Glass-Maujean, Ch. Jungen, A.-M. Vasserot, H. Schmoranzer, A. Knie, S. Kuebler, A. Ehresmann, W. Ubachs
Published in: Journal of Molecular Spectroscopy, 338, 2017, Page(s) 22-71, ISSN 1096-083X
Publisher: Elsevier
DOI: 10.1016/j.jms.2017.05.011

Shape resonances in H2 as photolysis reaction intermediates

Author(s): K.-F. Lai, E.J. Salumbides, W. Ubachs, M. Beyer
Published in: Phys. Rev. Lett., 127, 2021, Page(s) 183001, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.127.183001

Photolysis Production and Spectroscopic Investigation of theHighest Vibrational States in H2 (X1Σg+ v = 13, 14)

Author(s): K.-F. Lai, M. Beyer, E.J.Salumbides, W. Ubachs
Published in: Journal of Physical Chemistry A, 125, 2021, Page(s) 1221-1228, ISSN 1520-5215
Publisher: American Chemical Society
DOI: 10.1021/acs.jpca.0c11136

Excitation of H2 at large internuclear separation: F1S+g outer well states and continuum resonances

Author(s): M.T. Trivikram, E.J. Salumbides, C. Jungen, W. Ubachs
Published in: Molecular Physics, 117, 2019, Page(s) 2961, ISSN 0026-8976
Publisher: Taylor & Francis
DOI: 10.1080/00268976.2019.1599457

Precision tests of nonadiabatic perturbation theory with measurements on the DT molecule

Author(s): K.-F. Lai, P. Czachorowski, M. Schloesser, M. Puchalski, J. Komasa, K. Pachucki, W. Ubachs, E. J. Salumbides
Published in: Physical Review Research, 1, 2019, Page(s) 033124, ISSN 2643-1564
Publisher: American Institute of Physics
DOI: 10.1103/physrevresearch.1.033124

Deceleration and trapping of SrF molecules

Author(s): P. Aggarwal, Y. Yin, K. Esajas, H.L. Bethlem, A. Boeschoten, A. Borschevsky, S. Hoekstra, K. Jungmann, V.R. Marshall, T.B. Meijknecht, M.C. Mooij, R.G.E. Timmermans, A. Touwen, W. Ubachs, L. Willmann
Published in: Phys. Rev. Lett., 127, 2021, Page(s) 173201, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.127.173201

Three-body QED test and fifth-force constraint from vibrations and rotations of HD+

Author(s): M. Germann, S. Patra, J.-Ph. Karr, L. Hilico, V. I. Korobov, E. J. Salumbides, K. S. E. Eikema, W. Ubachs, J. C. J. Koelemeij
Published in: Physical Review Research, 3, 2021, Page(s) L022028, ISSN 0031-899X
Publisher: American Institute of Physics
DOI: 10.1103/physrevresearch.3.l022028

H2 Lyman and Werner band lines and their sensitivity for a variation of the proton-electron mass ratio in the gravitational potential of white dwarfs

Author(s): E. J. Salumbides, J. Bagdonaite, H. Abgrall, E. Roueff, W. Ubachs
Published in: Monthly Notices of the Royal Astronomical Society, 450, 2015, Page(s) 1237, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/stv656

Rayleigh-Brillouin light scattering spectroscopy of air; experiment, predictive model and dimensionsless scaling

Author(s): Y. Wang, Z. Gu, K. Liang, W. Ubachs
Published in: Molecular Physics, 119, 2021, Page(s) e1804635, ISSN 0026-8976
Publisher: Taylor & Francis
DOI: 10.1080/00268976.2020.1804635

EUV spectroscopy of highly charged Sn13+−Sn15+ ions in an electron-beam ion trap

Author(s): J. Scheers, C. Shah, A. Ryabtsev, H. Bekker, F. Torretti, J. Sheil, D. A. Czapski, J. Berengut, W. Ubachs, J. R. Crespo Lopez-Urrutia, R. Hoekstra, O. O. Versolato
Published in: Physical Review A, 101, 2020, Page(s) 062511, ISSN 1050-2947
Publisher: American Institute of Physics
DOI: 10.1103/physreva.101.062511

Lamb-peak spectrum of the HD (2-0) P(1) line

Author(s): M. L. Diouf, F. M. J. Cozijn, K.-F. Lai, E. J. Salumbides, and W. Ubachs
Published in: Physical Review Research, 2, 2020, Page(s) 023209, ISSN 2643-1564
Publisher: American Institute of Physics
DOI: 10.1103/physrevresearch.2.023209

Precision measurement of quasi-bound resonances in H2 and the H + H scattering length

Author(s): K.-F. Lai, E. J. Salumbides, M. Beyer and W. Ubachs
Published in: Molecular Physics, 2021, Page(s) e2018063, ISSN 0026-8976
Publisher: Taylor & Francis
DOI: 10.1080/00268976.2021.2018063

Lamb-dips and Lamb-peaks in the saturation spectrum of HD

Author(s): M.L. Diouf, F.M.J. Cozijn, B. Darquie, E.J. Salumbides, W. Ubachs
Published in: Optics Letters, 44, 2019, Page(s) 4733, ISSN 0146-9592
Publisher: Optical Society of America
DOI: 10.1364/ol.44.004733

Fourier-transform VUV spectroscopy of 14,15N and 12,13C

Author(s): K.F. Lai, W. Ubachs, N. de Oliveira, E.J. Salumbides
Published in: Atoms, 8, 2020, Page(s) 62, ISSN 2218-2004
Publisher: MDPI
DOI: 10.3390/atoms8030062

Network-based design of near-infrared Lamb-dip experiments and determination of pure rotational energies of H218O at kHz accuracy

Author(s): M.L. Diouf, R. Tobias, I. Simko, F.M.J. Cozijn, E.J. Salumbides, W. Ubachs, A. Csaszar
Published in: Journal of Physical and Chemical Reference Data, 50, 2021, Page(s) 023106, ISSN 0047-2689
Publisher: American Chemical Society
DOI: 10.1063/5.0052744

H2/HD molecular data for analysis of quasar spectra in search of varying constants

Author(s): W. Ubachs, E.J. Salumbides, M.T. Murphy, H. Abgrall, E. Roueff
Published in: Astronomy & Astrophysics, 622, 2019, Page(s) A127, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/201834782

Two-photon Doppler-free ultraviolet laser spectroscopy on sulphur atoms

Author(s): K.-F. Lai, E. J. Salumbides, W. Ubachs
Published in: Journal of Physics B, 53, 2020, Page(s) 175002, ISSN 0953-4075
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6455/ab9c37

avity Ring-down UV spectroscopy of the C2S+-X2P electronic transition of CH

Author(s): C. Medcraft, H. Linnartz, W. Ubachs
Published in: Journal of Molecular Spectroscopy, 360, 2019, Page(s) 15-23, ISSN 1096-083X
Publisher: Elsevier
DOI: 10.1016/j.jms.2019.04.005

Chirp-compensated pulsed titanium-sapphire laser system for precision spectroscopy.

Author(s): J. Hussels; C.-F. Cheng; Edcel J. Salumbides; Wim Ubachs
Published in: Optics Letters, 5, 2020, Page(s) 5909, ISSN 0146-9592
Publisher: Optical Society of America
DOI: 10.1364/ol.401703

Sn ion energy distributions of ns- and ps-laser produced plasmas

Author(s): Bayerle, A; Deuzeman, M J; Heijden, S van der; Kurilovich, D; Pinto, T de Faria; Stodolna, A; Witte, S; Eikema, K S E; Ubachs, W; Hoekstra, R; Versolato, O O
Published in: Plasma sources science & technology, 27, 2018, Page(s) 045001, ISSN 0963-0252
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6595/aab533

Benchmarking theory with an improved measurement of the ionization and dissociation energies of H2

Author(s): N. Hoelsch, M. Beyer, E.J. Salumbides, K.S.E. Eikema, W. Ubachs, C. Jungen, F. Merkt
Published in: Physical Review Letters, 122, 2019, Page(s) 103002, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.122.103002

Systematic study and uncertainty evaluation of P,T-odd molecular enhancement factors in BaF

Author(s): Pi A. B. Haase, Diewertje J. Doeglas, Alexander Boeschoten, Ephraim Eliav, Miroslav Iliaš, Parul Aggarwal, Hendrick L. Bethlem, Anastasia Borschevsky, Kevin Esajas, Yongliang Hao, Steven Hoekstra, Virginia R. Marshall, Thomas B. Meijknecht, Maarten C. Mooij, Kees Steinebach, Rob G. E. Timmermans, Anno Touwen, Wim Ubachs, Lorenz Willmann, Yanning Yin
Published in: Journal of Chemical Physics, 155, 2021, Page(s) 034309, ISSN 0021-9606
Publisher: American Institute of Physics
DOI: 10.1063/5.0047344

Proton-electron mass ratio from laser spectroscopy of HD+ at the part-per-trillion level

Author(s): Sayan Patra, M. Germann, J.-Ph. Karr, M. Haidar, L. Hilico, V.I. Korobov, F.M.J. Cozijn, K.S.E. Eikema, W. Ubachs, J.C.J. Koelemeij
Published in: Science, 369, 2020, Page(s) 1238, ISSN 0036-8075
Publisher: American Association for the Advancement of Science
DOI: 10.1126/science.aba0453

Dissociation Energy of the Hydrogen Molecule at 10 − 9 Accuracy

Author(s): C.-F. Cheng, J. Hussels, M. Niu, H. L. Bethlem, K. S. E. Eikema, E. J. Salumbides, W. Ubachs, M. Beyer, N. Hölsch, J. A. Agner, F. Merkt, L.-G. Tao, S.-M. Hu, Ch. Jungen
Published in: Physical Review Letters, 121/1, 2018, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/PhysRevLett.121.013001

Relativistic and QED Effects in the Fundamental Vibration of T 2

Author(s): T. Madhu Trivikram, M. Schlösser, W. Ubachs, E. J. Salumbides
Published in: Physical Review Letters, 120/16, 2018, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/PhysRevLett.120.163002

Search for Varying Constants of Nature from Astronomical Observation of Molecules

Author(s): Wim Ubachs
Published in: Space Science Reviews, 214/1, 2018, ISSN 0038-6308
Publisher: Kluwer Academic Publishers
DOI: 10.1007/s11214-017-0432-y

Rayleigh–Brillouin light scattering spectroscopy of nitrous oxide (N 2 O)

Author(s): Y. Wang, K. Liang, W. van de Water, W. Marques, W. Ubachs
Published in: Journal of Quantitative Spectroscopy and Radiative Transfer, 206, 2018, Page(s) 63-69, ISSN 0022-4073
Publisher: Pergamon Press Ltd.
DOI: 10.1016/j.jqsrt.2017.10.029

Sub-Doppler Frequency Metrology in HD for Tests of Fundamental Physics

Author(s): F. M. J. Cozijn, P. Dupré, E. J. Salumbides, K. S. E. Eikema, W. Ubachs
Published in: Physical Review Letters, 120/15, 2018, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/PhysRevLett.120.153002

Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498

Author(s): M. Daprà, C. Henkel, S. A. Levshakov, K. M. Menten, S. Muller, H. L. Bethlem, S. Leurini, A. V. Lapinov, W. Ubachs
Published in: Monthly Notices of the Royal Astronomical Society, 472/4, 2017, Page(s) 4434-4443, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/stx2308

CARS spectroscopy of the $(v=0 \rightarrow 1)$ band in ${{{\rm{T}}}_{2}}_{}$

Author(s): M Schlösser, X Zhao, M Trivikram, W Ubachs, E J Salumbides
Published in: Journal of Physics B: Atomic, Molecular and Optical Physics, 50/21, 2017, Page(s) 214004, ISSN 0953-4075
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6455/aa8d80

Constraint on a varying proton-to-electron mass ratio from H 2 and HD absorption at z abs ≃ 2.34

Author(s): M. Daprà, M. van der Laan, M. T. Murphy, W. Ubachs
Published in: Monthly Notices of the Royal Astronomical Society, 465/4, 2016, Page(s) 4057-4073, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/stw3003

Plasma Propulsion of a Metallic Microdroplet and its Deformation upon Laser Impact

Author(s): Dmitry Kurilovich, Alexander L. Klein, Francesco Torretti, Adam Lassise, Ronnie Hoekstra, Wim Ubachs, Hanneke Gelderblom, Oscar O. Versolato
Published in: Physical Review Applied, 6/1, 2016, ISSN 2331-7019
Publisher: American institute of Phhysics
DOI: 10.1103/PhysRevApplied.6.014018

Analysis of the fine structure of Sn 11 + – Sn 14 +

Author(s): A. Windberger, F. Torretti, A. Borschevsky, A. Ryabtsev, S. Dobrodey, H. Bekker, E. Eliav, U. Kaldor, W. Ubachs, R. Hoekstra, J. R. Crespo López-Urrutia, O. O. Versolato
Published in: Physical Review A, 94/1, 2016, ISSN 2469-9926
Publisher: American Institute of Physics
DOI: 10.1103/PhysRevA.94.012506

Spectroscopic Survey of Electronic Transitions of C 6 H, 13 C 6 H, and C 6 D

Author(s): Xavier Bacalla, Edcel J. Salumbides, Harold Linnartz, Wim Ubachs, Dongfeng Zhao
Published in: The Journal of Physical Chemistry A, 120/32, 2016, Page(s) 6402-6417, ISSN 1089-5639
Publisher: American Chemical Society
DOI: 10.1021/acs.jpca.6b06647

Rayleigh-Brillouin scattering in SF6 in the kinetic regime

Author(s): Yuanqing Wang, Yin Yu, Kun Liang, Wilson Marques, Willem van de Water, Wim Ubachs
Published in: Chemical Physics Letters, 669, 2017, Page(s) 137-142, ISSN 0009-2614
Publisher: Elsevier BV
DOI: 10.1016/j.cplett.2016.12.033

Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target

Author(s): M. J. Deuzeman, A. S. Stodolna, E. E. B. Leerssen, A. Antoncecchi, N. Spook, T. Kleijntjens, J. Versluis, S. Witte, K. S. E. Eikema, W. Ubachs, R. Hoekstra, O. O. Versolato
Published in: Journal of Applied Physics, 121/10, 2017, Page(s) 103301, ISSN 0021-8979
Publisher: American Institute of Physics
DOI: 10.1063/1.4977854

Optical spectroscopy of complex open- 4 d -shell ions Sn 7 + –

Author(s): F. Torretti, A. Windberger, A. Ryabtsev, S. Dobrodey, H. Bekker, W. Ubachs, R. Hoekstra, E. V. Kahl, J. C. Berengut, J. R. Crespo López-Urrutia, O. O. Versolato
Published in: Physical Review A, 95/4, 2017, ISSN 2469-9926
Publisher: American Institute of Physics
DOI: 10.1103/PhysRevA.95.042503

${{{\rm{C}}}_{60}}^{+}$ and the Diffuse Interstellar Bands: An Independent Laboratory Check

Author(s): Steffen Spieler, Martin Kuhn, Johannes Postler, Malcolm Simpson, Roland Wester, Paul Scheier, Wim Ubachs, Xavier Bacalla, Jordy Bouwman, Harold Linnartz
Published in: The Astrophysical Journal, 846/2, 2017, Page(s) 168, ISSN 1538-4357
Publisher: Institute of Physics
DOI: 10.3847/1538-4357/aa82bc

Power-law scaling of plasma pressure on laser-ablated tin microdroplets

Author(s): Dmitry Kurilovich, Mikhail M. Basko, Dmitrii A. Kim, Francesco Torretti, Ruben Schupp, Jim C. Visschers, Joris Scheers, Ronnie Hoekstra, Wim Ubachs, Oscar O. Versolato
Published in: Physics of Plasmas, 25/1, 2018, Page(s) 012709, ISSN 1070-664X
Publisher: American Institute of Physics
DOI: 10.1063/1.5010899

Short-wavelength out-of-band EUV emission from Sn laser-produced plasma

Author(s): F Torretti, R Schupp, D Kurilovich, A Bayerle, J Scheers, W Ubachs, R Hoekstra, O O Versolato
Published in: Journal of Physics B: Atomic, Molecular and Optical Physics, 51/4, 2018, Page(s) 045005, ISSN 0953-4075
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6455/aaa593

Sn ion energy distributions of ns- and ps-laser produced plasmas

Author(s): A Bayerle, M J Deuzeman, S van der Heijden, D Kurilovich, T de Faria Pinto, A Stodolna, S Witte, K S E Eikema, W Ubachs, R Hoekstra, O O Versolato
Published in: Plasma Sources Science and Technology, 27/4, 2018, Page(s) 045001, ISSN 1361-6595
Publisher: Institute of Physics
DOI: 10.1088/1361-6595/aab533

Probing the Gravitational Dependence of the Fine-Structure Constant from Observations of White Dwarf Stars

Author(s): Matthew Bainbridge, Martin Barstow, Nicole Reindl, W.-Ü Tchang-Brillet, Thomas Ayres, John Webb, John Barrow, Jiting Hu, Jay Holberg, Simon Preval, Wim Ubachs, Vladimir Dzuba, Victor Flambaum, Vincent Dumont, Julian Berengut
Published in: Universe, 3/2, 2017, Page(s) 32, ISSN 2218-1997
Publisher: mdpi
DOI: 10.3390/universe3020032

Analysis of carbon monoxide absorption at zabs ≃ 2.5 to constrain variation of the proton-to-electron mass ratio

Author(s): M. Daprà, P. Noterdaeme, M. Vonk, M. T. Murphy, W. Ubachs
Published in: Monthly Notices of the Royal Astronomical Society, 467/4, 2017, Page(s) 3848-3855, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/stx331

Fourier-transform spectroscopy of 13C17O and deperturbation analysis of the A1Π (υ=0–3) levels

Author(s): R. Hakalla, M.L. Niu, R.W. Field, A.N. Heays, E.J. Salumbides, G. Stark, J.R. Lyons, M. Eidelsberg, J.L. Lemaire, S.R. Federman, N. de Oliveira, W. Ubachs
Published in: Journal of Quantitative Spectroscopy and Radiative Transfer, 189, 2017, Page(s) 312-328, ISSN 0022-4073
Publisher: Pergamon Press Ltd.
DOI: 10.1016/j.jqsrt.2016.12.012

High-precision spectroscopy of the HD+ molecule at the 1-p.p.b. level

Author(s): J. Biesheuvel, J.-Ph. Karr, L. Hilico, K. S. E. Eikema, W. Ubachs, J. C. J. Koelemeij
Published in: Applied Physics B, 123/1, 2017, ISSN 0946-2171
Publisher: Springer Verlag
DOI: 10.1007/s00340-016-6576-8

Discovery of a Perseus-like cloud in the early Universe

Author(s): P. Noterdaeme, J.-K. Krogager, S. Balashev, J. Ge, N. Gupta, T. Krühler, C. Ledoux, M. T. Murphy, I. Pâris, P. Petitjean, H. Rahmani, R. Srianand, W. Ubachs
Published in: Astronomy & Astrophysics, 597, 2017, Page(s) A82, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/201629173

A testing time for antimatter

Author(s): W. Ubachs
Published in: Science, 354/6312, 2016, Page(s) 546-547, ISSN 0036-8075
Publisher: American Association for the Advancement of Science
DOI: 10.1126/science.aah6215

Precision measurements and test of molecular theory in highly excited vibrational states of H2 (v = 11)

Author(s): T. Madhu Trivikram, M. L. Niu, P. Wcisło, W. Ubachs, E. J. Salumbides
Published in: Applied Physics B, 122/12, 2016, ISSN 0946-2171
Publisher: Springer Verlag
DOI: 10.1007/s00340-016-6570-1

Molecular Fountain

Author(s): Cunfeng Cheng, Aernout P. P. van der Poel, Paul Jansen, Marina Quintero-Pérez, Thomas E. Wall, Wim Ubachs, Hendrick L. Bethlem
Published in: Physical Review Letters, 117/25, 2016, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/PhysRevLett.117.253201

Colloquium : Search for a drifting proton-electron mass ratio from H 2

Author(s): W. Ubachs, J. Bagdonaite, E. J. Salumbides, M. T. Murphy, L. Kaper
Published in: Reviews of Modern Physics, 88/2, 2016, ISSN 0034-6861
Publisher: American Physical Society
DOI: 10.1103/RevModPhys.88.021003

Spectroscopy and perturbation analysis of the A 1 π (v=0) state of 13 C 16 O

Author(s): M. L. Niu, R. Hakalla, T. Madhu Trivikram, A. N. Heays, N. de Oliveira, E. J. Salumbides, W. Ubachs
Published in: Molecular Physics, 114/19, 2016, Page(s) 2857-2867, ISSN 0026-8976
Publisher: Taylor & Francis
DOI: 10.1080/00268976.2016.1218078

Physics beyond the Standard Model from hydrogen spectroscopy

Author(s): W. Ubachs, J.C.J. Koelemeij, K.S.E. Eikema, E.J. Salumbides
Published in: Journal of Molecular Spectroscopy, 320, 2016, Page(s) 1-12, ISSN 0022-2852
Publisher: Academic Press
DOI: 10.1016/j.jms.2015.12.003

VIS and VUV spectroscopy of 12 C 17 O and deperturbation analysis of the A 1 Π, υ = 1–5 levels

Author(s): R. Hakalla, M. L. Niu, R. W. Field, E. J. Salumbides, A. N. Heays, G. Stark, J. R. Lyons, M. Eidelsberg, J. L. Lemaire, S. R. Federman, M. Zachwieja, W. Szajna, P. Kolek, I. Piotrowska, M. Ostrowska-Kopeć, R. Kępa, N. de Oliveira, W. Ubachs
Published in: RSC Adv., 6/38, 2016, Page(s) 31588-31606, ISSN 2046-2069
Publisher: Royal Society of Chemistry
DOI: 10.1039/C6RA01358A

CONSTRAINT ON A COSMOLOGICAL VARIATION IN THE PROTON-TO-ELECTRON MASS RATIO FROM ELECTRONIC CO ABSORPTION

Author(s): M. Daprà, M. L. Niu, E. J. Salumbides, M. T. Murphy, W. Ubachs
Published in: The Astrophysical Journal, 826/2, 2016, Page(s) 192, ISSN 1538-4357
Publisher: Institute of Physics
DOI: 10.3847/0004-637X/826/2/192

The excited J = 0 1 Σ u

Author(s): M. Glass-Maujean, Ch. Jungen, G.D. Dickenson, N. de Oliveira, W. Ubachs
Published in: Journal of Molecular Spectroscopy, 320, 2016, Page(s) 33-38, ISSN 0022-2852
Publisher: Academic Press
DOI: 10.1016/j.jms.2016.01.002

Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD+

Author(s): J. Biesheuvel, J.-Ph. Karr, L. Hilico, K. S. E. Eikema, W. Ubachs, J. C. J. Koelemeij
Published in: Nature Communications, 7, 2016, Page(s) 10385, ISSN 2041-1723
Publisher: Nature Publishing Group
DOI: 10.1038/ncomms10385

Constraint on a varying proton-to-electron mass ratio from molecular hydrogen absorption towards quasar SDSS J123714.60+064759.5

Author(s): M. Daprà, J. Bagdonaite, M. T. Murphy, W. Ubachs
Published in: Monthly Notices of the Royal Astronomical Society, 454/1, 2015, Page(s) 489-506, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/stv1998

Spectroscopy and perturbation analysis of the CO A 1 Π −X 1 Σ + (2,0), (3,0) and (4,0) bands

Author(s): M. L. Niu, E. J. Salumbides, A. N. Heays, N. de Oliveira, R. W. Field, W. Ubachs
Published in: Molecular Physics, 114/5, 2015, Page(s) 627-636, ISSN 0026-8976
Publisher: Taylor & Francis
DOI: 10.1080/00268976.2015.1108472

Communication: Test of quantum chemistry in vibrationally hot hydrogen molecules

Author(s): M. L. Niu, E. J. Salumbides, W. Ubachs
Published in: The Journal of Chemical Physics, 143/8, 2015, Page(s) 081102, ISSN 0021-9606
Publisher: American Institute of Physics
DOI: 10.1063/1.4929568

Constraints on extra dimensions from precision molecular spectroscopy

Author(s): E J Salumbides, A N Schellekens, B Gato-Rivera, W Ubachs
Published in: New Journal of Physics, 17/3, 2015, Page(s) 033015, ISSN 1367-2630
Publisher: Institute of Physics Publishing
DOI: 10.1088/1367-2630/17/3/033015

Constraint on a Varying Proton-Electron Mass Ratio 1.5 Billion Years after the Big Bang

Author(s): J. Bagdonaite, W. Ubachs, M. T. Murphy, J. B. Whitmore
Published in: Physical Review Letters, 114/7, 2015, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/PhysRevLett.114.071301

Rayleigh-Brillouin scattering in binary mixtures of disparate-mass constituents: SF6-He, SF6-D2, and SF6-H2

Author(s): Y. Wang, W. Ubachs, C.A.M. de Moraes, W. Marques Jr
Published in: Physical Review E, 103, 2021, Page(s) 013102, ISSN 1539-3755
Publisher: American Physical Society
DOI: 10.1103/physreve.103.013102

Precision measurement of the fundamental vibrational frequencies of tritium-bearing hydrogen molecules: T2, DT, HT

Author(s): K.-F. Lai, V. Hermann, T. M. Trivikram, M. Diouf, M. Schlösser, W. Ubachs, E. J. Salumbides
Published in: Phys.Chem. Chem. Phys., 22, 2020, Page(s) 8973, ISSN 1463-9076
Publisher: Royal Society of Chemistry
DOI: 10.1039/d0cp00596g

Lifetime Measurements of the A2Π1/2 and A2Π3/2 States in BaF

Author(s): P. Aggarwal, V.R. Marshall, H.L. Bethlem, A. Boeschoten, A. Borschevsky, M. Denis, K. Esajas, Y. Hao, S. Hoekstra, K. Jungmann, T.B. Meijknecht, M.C. Mooij, R.G.E. Timmermans, A. Touwen, W. Ubachs, S.M. Vermeulen, L. Willmann, Y. Yin, A. Zapara
Published in: Physical Review A, 100, 2019, Page(s) 052503, ISSN 2469-9926
Publisher: American institute of Physics
DOI: 10.1103/physreva.100.052503

Hyperfine-Resolved Near-Infrared Spectra of H217O

Author(s): Mattia Melosso, Meissa L. Diouf, Luca Bizzocchi, Michael E. Harding, Frank M. J. Cozijn, Cristina Puzzarini, and Wim Ubachs
Published in: Journal of Physical Chemistry A, 125, 2021, Page(s) 7884-7890, ISSN 1089-5639
Publisher: American Chemical Society
DOI: 10.1021/acs.jpca.1c05681

Constraints on changes in the proton-electron mass ratio using methanol lines

Author(s): N. Kanekar, W. Ubachs, K.M. Menten, J. Bagdonaite, A. Brunthaler, C. Henkel, S. Muller, H.L. Bethlem, M. Dapra
Published in: Monthly Notices of the Royal Astronomical Society, 448, 2015, Page(s) L104, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnrasl/slu206

Determination of the Interval between the Ground States of Para- and Ortho-H2

Author(s): M. Beyer, N. Hölsch, J. Hussels, C.-F. Cheng, E. J. Salumbides, K. S. E. Eikema, W. Ubachs, Ch. Jungen, and F. Merkt
Published in: Physical Review Letters, 123, 2019, Page(s) 163002, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/physrevlett.123.163002

A study of submillimeter methanol absorption toward PKS 1830−211:Excitation, invariance of the proton-electron mass ratio, and systematics

Author(s): S. Muller, W. Ubachs, K.M. Menten, C. Henkel, N. Kanekar
Published in: Astronomy and Astrophysics, 652, 2021, Page(s) A5, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202140531