Performance of a microcalorimeter with a superconducting transition edge thermometer

被引：13
|
作者：
Hoevers, HFC [1 ]
Bento, AC [1 ]
Bruijn, MP [1 ]
Gottardi, L [1 ]
Korevaar, MAN [1 ]
Mels, WA [1 ]
de Korte, PAJ [1 ]
机构：
[1] SRON, NL-3584 CA Utrecht, Netherlands
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 444卷 / 1-2期
关键词：
superconducting transition edge sensor; microcalorimeter; electrothermal feedback; X-ray detection;
D O I：
10.1016/S0168-9002(99)01356-X
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The performance of a single-pixel microcalorimeter is described and analyzed. The microcalorimeter has a Cu absorber which is isolated from the heat bath by means of a SixNy membrane and is connected to a voltage-biased Ti/Au proximity bilayer thermometer with a transition temperature of about 150 mK. The measured FWHM energy resolution for 5.9 keV X-ray photons is 12.4 eV for this sensor while 2.36(k(B)T(2)C)(1/2) equals 9.1 eV. The detector time constant is about 1 ms. The measured current-voltage characteristic and current noise spectra are analyzed in detail in the context of the energy resolution. High frequency excess noise is measured in the superconducting transition and is briefly discussed. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：192 / 195
页数：4
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