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

被引：15

作者：

Tutin, GA

Ryzhov, IV

Eismont, VP

Kireev, AV

Condé, H

Elmgren, K

Olsson, N

Renberg, PU

机构：

[1] VG Khlopin Radium Inst, St Petersburg 194021, Russia

[2] Univ Uppsala, Dept Neutron Res, S-75120 Uppsala, Sweden

[3] Univ Uppsala, Svedberg Lab, S-75121 Uppsala, Sweden

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2001年 / 457卷 / 03期

关键词：

ionization chamber; fission fragment; angular distributions;

D O I：

10.1016/S0168-9002(00)00775-0

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A gridded ionization chamber for fission fragment detection is described. The chamber has been specially designed for use at the quasi-monoenergetic Li-7(p, n) neutron source at the The Svedberg Laboratory, Uppsala, Sweden. The detector permits measurements of fission fragment energy and emission angle 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-flight 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.

引用

页码：646 / 652

页数：7

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