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Abstract

A series of neutron capture measurements have been made at GELINA with a 1.74 g metallic 241-Am sample (2 x 2 cm**2 disk) canned under vacuum in a stainless steel cylinder containing a coaxial lead cylinder of 2 mm thickness. These measurements were made at a flight path of 10 m in the neutron energy range from 0.1 eV up to 200 keV. The gamma ray detectors were two D-6C-6 liquid scintillators, each shielded by a 10 mm thick lead cap. Compared to previous tentative tests, we now obtained over this energy range an optimal signal to background ratio of 6:1 instead of 2:1 at 100 keV by improving our experimental set up using a large shielding facility, made available by SCK-CEN Mol. Definite measurements were carried out using a Cd overlap filter in order to normalize our data to absolute values via a few well known low energy resonances in 241-Am. For the flux measurements, a 0.6 mm thick 10-B disk was placed in the same position as the Am sample. The background had been evaluated by means of the black resonance technique using S, Na, Co, Bi and Ag filters. Cross sections will be presented for the energy range of 600 eV up to 150 keV.

Additional information

Authors: VANPRAET G, UNIVERSITY OF ANTWERPEN (BELGIUM);ORNL, OAK RIDGE (USA);JRC GEEL ESTAB. (BELGIUM);CORNELIS E, UNIVERSITY OF ANTWERPEN (BELGIUM);ORNL, OAK RIDGE (USA);JRC GEEL ESTAB. (BELGIUM);RAMAN S, UNIVERSITY OF ANTWERPEN (BELGIUM);ORNL, OAK RIDGE (USA);JRC GEEL ESTAB. (BELGIUM);ROHR G UNIVERSITY OF ANTWERPEN (BELGIUM), UNIVERSITY OF ANTWERPEN (BELGIUM);ORNL, OAK RIDGE (USA);JRC GEEL ESTAB. (BELGIUM);ORNL, OAK RIDGE (USA), UNIVERSITY OF ANTWERPEN (BELGIUM);ORNL, OAK RIDGE (USA);JRC GEEL ESTAB. (BELGIUM);JRC GEEL ESTAB. (BELGIUM), UNIVERSITY OF ANTWERPEN (BELGIUM);ORNL, OAK RIDGE (USA);JRC GEEL ESTAB. (BELGIUM)
Bibliographic Reference: INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR BASIC AND APPLIED SCIENCE, SANTA FE, NEW MEXICO (USA), MAY 13- 17, 1985 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32120 ORA
Availability: Can be ordered online
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