H2 production in the 10B(n,α)7Li reaction in water

被引：1

作者：

Dietz, Travis C. ^{[1
]}

Thompson, Alan ^{[2
]}

Al-Sheikhly, Mohamad ^{[1
]}

Sterniczuk, Marcin ^{[3
]}

Bartels, David M. ^{[3
]}

机构：

[1] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[2] NIST, Gaithersburg, MD 20899 USA

[3] Univ Notre Dame, 203 Radiat Res Bldg, Notre Dame, IN 46556 USA

来源：

RADIATION PHYSICS AND CHEMISTRY | 2021年 / 180卷

关键词：

Water radiolysis; B-10; Neutron capture; HYDROGEN-PEROXIDE; STAINLESS-STEEL; HEAVY-IONS; RADIOLYSIS; NEUTRON; YIELDS; CHEMISTRY; DECOMPOSITION; IRRADIATION; CORROSION;

D O I：

10.1016/j.radphyschem.2020.109319

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We demonstrate a method for measuring the H-2 produced in water from the B-10(n,alpha)Li-7 fission reaction. Low energy neutrons from the NIST Center for Neutron Research interact with borate-containing water in a temperature-controlled high pressure cell made from titanium. After exposure for one to several hours, the water is extracted and sparged with argon. H-2 entrained in the sparging gas is sampled with a small mass spectrometer. To determine the neutron exposure, a small amount of sodium is included in the borate solution. The water is collected and Na-24 activation is measured in a counting apparatus on the following day. The G-value for H-2 at room temperature is found to be (1.18 +/- 0.10) molecules H-2/100eV, in good agreement with previous estimates and recent modeling calculations.

引用

页数：7

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