Mono-energetic mono-directional resonance neutron activation of natural indium metal target
- CNAEM, Istanbul (Turkey)
- JAERI, Ibaraki (Japan)
The mono-energetic neutrons of 1.456eV energy are obtained from 2 MWth TR-I swimming pool type research reactor using double collimated beams and BRAGG reflection of pure Beryllium mono-crystal with extremely fine energy resolution. Foil thickness for 3 foils were 26., 28, and 44.10-4 cm and they were perpendicular to the beam of mono-energetic neutrons and were irradiated in sandwich form. After irradiation, the saturation activities were obtained using Phillips two-pie special beta-ray detector in a well controlled and shielded geometry. Counting reproducibility was excellent (better than 0.1%). Special Attention was paid to the irradiated (side A) and non-irradiated (side B) sides of the foils. Usual irradiation and decay corrections were applied to obtain the saturation activities. In this work, the preliminary calculations of reaction rates using Nakazawa M. et al., JENDL Dosimetry file, JAERI 1325, (1992) were performed. Considerable differences are found between the calculations and experiment and possible reasons are still under investigation. The preliminary calculations of reaction rates using ENDFB/VI are in agreement with JENDL-3 estimates. Absolute reaction rate estimates are not yet ready. Considerable numbers of research centers are interested in the experiment and very constructive inputs are expressed and obtained from Hiroyuki Oigawa, Shigeaki Okajima and T. Mukaiyama, JAERI, Japan; N.P. Baumann and K.O. Ott, USA; E. Zsolnay and E. Szondy, Hungary; M.C. Lopes and J. Molina, Portugal; F. Bensch, H. Boeck Austria; and M. Turgut and A. Isyar, Turkey. Investigations using collision theory, multiple scattering and monte-carlo techniques have been undertaken.
- OSTI ID:
- 55586
- Report Number(s):
- CONF-930809-; ISBN 0-8031-1899-6; TRN: 95:012831
- Resource Relation:
- Conference: 8. ASTM-EURATOM symposium on reactor dosimetry, Vail, CO (United States), 29 Aug - 3 Sep 1993; Other Information: PBD: 1994; Related Information: Is Part Of Reactor dosimetry. ASTM STP 1228; Farrar, H. IV; Lippincott, E.P.; Williams, J.G.; Vehar, D.W. [eds.]; PB: 871 p.
- Country of Publication:
- United States
- Language:
- English
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