A thermal-neutron source for calibration of "zero-thickness" detectors

被引：0
|
作者：
Koshelev, AS [1 ]
Odintsov, YM
Maslov, GN
Sevast'yanov, VD
机构：
[1] Res Inst Physicotech & Radio Engn Measurements, Mendeleevo 141570, Moscow Oblast, Russia
[2] All Russian Res Inst Expt Phys, Russian Fed Nucl Ctr, Sarov 607200, Nizhni Novgorod, Russia
来源：
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 1999年 / 42卷 / 03期
关键词：
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A specialized source of thermal neutrons was produced on the basis of the BP-K1 research reactor. The thermal-neutron field characteristics were determined in the presence of intermediate and fast neutrons. The neutron spectrum is presented in analytical form in the 10(-10)-18-MeV energy range. In the maximum single energy run of the reactor with a duration of <2 min, the thermal-neutron fluence was 1.9 x 10(14) neutron/cm(2), with fluences of intermediate and fast neutrons of 0.4 x 10(14) and 0.3 x 10(14) neutron/cm(2), respectively. The effective temperature of thermal neutrons is 6.6 degrees C higher than the ambient temperature. The fraction of the field isotropic component is estimated as 80%.
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页码：303 / 309
页数：7
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