Modeling of water radiolysis at spallation neutron sources

被引：0

作者：

Daemen, LL ^{[1
]}

Kanner, GS ^{[1
]}

Lillard, RS ^{[1
]}

Butt, DP ^{[1
]}

Brun, TO ^{[1
]}

Sommer, WF ^{[1
]}

机构：

[1] Univ Calif Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA

来源：

PROCEEDINGS OF THE SYMPOSIUM ON MATERIALS FOR SPALLATION NEUTRON SOURCES | 1998年

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：

In spallation neutron sources neutrons are produced when a beam of high-energy particles (e.g., 1 GeV protons) collides with a (water-cooled) heavy metal target such as tungsten. The resulting spallation reactions produce a complex radiation environment (which differs from typical conditions at fission and fusion reactors) leading to the radiolysis of water molecules. Most water radiolysis products are short-lived but extremely reactive. When formed in the vicinity of the target surface they can react with metal atoms, thereby contributing to target corrosion. We will describe the results of calculations and experiments performed at Los Alamos to determine the impact on target corrosion of water radiolysis in the spallation radiation environment. Our computational methodology relies on the use of the Los Alamos radiation transport code, LAHET, to determine the radiation environment, and the AEA code, FACSIMILE, to model reaction-diffusion processes.

引用

页码：83 / 91

页数：9