An ionization chamber with Frisch grids for studies of high-energy neutron-induced fission

Authors
Tutin, GA Ryzhov, IV Eismont, VP Kireev, AV Conde, H Elmgren, K Olsson, N Renberg, PU
Citation
Ga. Tutin et al., An ionization chamber with Frisch grids for studies of high-energy neutron-induced fission, NUCL INST A, 457(3), 2001, pp. 646-652
Citations number
20
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
457
Issue
3
Year of publication
2001
Pages
646 - 652
Database
ISI
SICI code
0168-9002(20010121)457:3<646:AICWFG>2.0.ZU;2-I
Abstract
A gridded ionization chamber for fission fragment detection is described. T he chamber has been specially designed for use at the quasi-monoenergetic L i-7(p, n) neutron source at the The Svedberg Laboratory, Uppsala, Sweden. T he detector permits measurements of fission fragment energy and emission an gle for two targets with diameter of up to 10 cm. The time response of the chamber ( less than or equal to 5 ns FWHM) is adequate to apply time-of-fli ght discrimination against background events induced by non-peak neutrons. Results of angular anisotropy measurements for the Th-232 (n, f) and U-238( n, f) reactions in the 20-160 MeV energy range are given. (C) 2001 Elsevier Science B.V. All rights reserved.