The effect of oxygen on anode wire swelling under high accumulated radiation dose

被引：5

作者：

Ferguson, T

Gavrilov, G

Krivchitch, A ^{[1
]}

Kuznetsova, E

Lebedev, V

Schipunov, L

机构：

[1] PNPI, Gatchina 188300, Russia

[2] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2002年 / 478卷 / 1-2期

关键词：

aging; ageing; intensive irradiation; wire swelling; oxidation;

D O I：

10.1016/S0168-9002(01)01766-1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present results from an aging investigation of straw drift tubes placed under sustained irradiation from a Sr-90 (2 Ci) beta-source, Aging tests were performed with two different gas mixtures 70% Xe + 10% CO2 + 20% CF4 and 40% Ar + 40% CO2 + 20% C2H2F4. A thorough study of the aging phenomenon of gold-coated tungsten wires with a diameter of 35 mum has been carried out with accumulated charges of 3.6 and 1.6 C/cm. As a result of the aging process, the gold coating on the wires was damaged, and the wire diameter increased by about 5-6%. Using nuclear reaction analysis in combination with an SEM/XEM analysis we determined that there is a direct correlation between the amount of oxygen inside the gold coating and the anode wire diameter. This anode swelling effect can be explained as a result of tungsten oxidation underneath the wire coating. This phenomenon of anode wire swelling by forces applied from within the anode wire is a possible new phenomenon in anode aging. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：254 / 258

页数：5

共 4 条

[1]

*ATLAS, 5 ATLAS TDT

[2]

FERGUSON T, 1999, POSSIBLE NEW MECH AN

[3]

GAVRILOV A, 2001, AGING PROPERTIES STR, P31

[4] Aging investigation of straw drift tubes using nuclear reaction analysis [J].

Gavrilov, G ;

Krivchitch, A ;

Kuznetsova, E ;

Lebedev, V ;

Schipunov, L ;

Lobachev, E .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 478 (1-2) :259-262

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