VARIATIONS OF CARBON FOIL LIFETIMES UNDER BOMBARDMENT BY N+, NE+, AR+ AND ZN+ IONS

被引：4

作者：

HELLBORG, R ^{[1
]}

MARTINSON, I ^{[1
]}

MANIAK, ST ^{[1
]}

IRVING, RE ^{[1
]}

HAAR, RR ^{[1
]}

CURTIS, LJ ^{[1
]}

BEIDECK, DJ ^{[1
]}

机构：

[1] UNIV TOLEDO,DEPT PHYS & ASTRON,TOLEDO,OH 43606

来源：

PHYSICA SCRIPTA | 1991年 / 43卷 / 03期

关键词：

D O I：

10.1088/0031-8949/43/3/007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Studies of the useful lifetime of 2-5-mu-g cm-2 carbon stripper foils have been made using 225 keV heavy ion beam bombardment. The foils were self supporting and were mounted both in a standard and a tension-slackened manner. In determining the quality of the foil during ion bombardment several techniques were used, in particular beam-foil spectroscopy. Here the intensity of the light emitted by the foil-emergent beam was measured as a function of bombardment time. The measured lifetime before foil failure for standard foils was found to agree well with a semiempirical model proposed by Auble and Galbraith, and the slackened foils exhibited usable lifetimes 3-4 times longer than the normal foils. The properties of ordinary and slackened foils were compared under realistic conditions. It is concluded that the slackened foils are very well suited for studies of atomic spectra and meanlives of excited states using beam foil excitation methods.

引用

页码：257 / 261

页数：5

共 12 条

[1] ENHANCEMENT OF THE LIFETIME OF CARBON STRIPPER FOILS BY A SLACKENING TECHNIQUE [J].