Removal of the mandrel from beryllium sputter coated capsules for NIF targets

被引：5

作者：

Bhandarkar, S. ^{[1
]}

Letts, S. A.

Buckley, S.

Alford, C.

Lindsey, E.

Hughes, J.

Youngblood, K. P.

Moreno, K.

Xu, H.

Huang, H.

Nikroo, A.

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Gen Atom Co, San Diego, CA 92186 USA

来源：

FUSION SCIENCE AND TECHNOLOGY | 2007年 / 51卷 / 04期

关键词：

D O I：

10.13182/FST07-A1445

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The choice of the mandrel material has a significant bearing on the properties of the sputter-coated beryllium shell needed for NIF targets. Here, we present our work on screening four mandrel materials, their impact on the Be shell and issues related to their subsequent removal. Beryllium shells sputter deposited on hollow glow discharge polymer or GDP spheres met most of the target specifications. However, they had greater opacity due to partial oxidation of the Be during the GDP burnout step. Poly (a-methyl styrene), silicon and nickel beads were explored as alternative mandrels but were plagued with problems such as cracking of the Be shell or incomplete removal. The most promising approach was a two-step coating process mediated by a thin 6,um Be mandrel that is made using GDP.

引用

页码：564 / 571

页数：8

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