Neutron flux characterization using LR-115 NTD and binary glass metal as converter

被引：0

作者：

Alvarado, R. ^{[1
]}

Palacios, D. ^{[1
]}

Sajo-Bohus, L. ^{[1
]}

Greaves, E. ^{[1
]}

Barros, H. ^{[1
]}

Nemeth, P. ^{[1
]}

Goncalves, I. F. ^{[2
]}

机构：

[1] Univ Simon Bolivar, Nucl Phys Lab, Caracas 8900, Venezuela

[2] Inst Tecnol & Nucl Estrada Nacl, P-2686953 Sacavem, Portugal

来源：

REVISTA MEXICANA DE FISICA | 2010年 / 56卷 / 01期

关键词：

LR-115; detector; binary glass metal; thermal neutron flux; Monte Carlo simulations;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The installed neutron irradiation cell at the USB-Laboratory is employed frequently for applications where the neutron field should be monitored. The ratio of epithermal and thermal neutron flux were determined by the cadmium difference method in three different irradiation locations of a graphite thermalized Cf-252 Source. Monte Carlo simulation provided the e expected thermal neutron field inside the irradiation cell and the NTD sensitivity. The passive device is a Kodak-Pathe LR-115 externally coated with a thin (0, 1 mm) binary glass metal strip Fe75B25 where the B-10(n,alpha)Li-7 reaction converts free neutrons into alpha particles that are registered as etched tracks. The results allow to determine the neutron flux in an easy, reproducible and effective way, with the advantage of a low self-absorption effect due to the converter material. Improved etching process of the LR-115 nuclear track detectors and the software parameters for track analysis are included.

引用

页码：5 / 8

页数：4

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