AN ABSOLUTE CRYOGENIC CALIBRATION SOURCE FOR A 2.5 GHZ RADIOMETER

被引：1
|
作者：
GERVASI, M
BONELLI, G
SIRONI, G
CAVALIERE, F
PASSERINI, A
CASANI, S
机构：
[1] CNR,IST IFCTR,I-20133 MILAN,ITALY
[2] UNIV MILAN,DIPARTIMENTO FIS,SEZIONE ASTROFIS,I-20133 MILAN,ITALY
[3] IST NAZL FIS NUCL,I-00185 ROME,ITALY
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 1995年 / 66卷 / 10期
关键词：
D O I：
10.1063/1.1146155
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We describe a liquid helium-cooled absolute reference load for the calibration of a. 2.5 GHz radiometer. This calibration system provides an absolute reference near the liquid helium boiling point. The accuracy of the reference source is better than 100 mK. We use this cold load to perform absolute temperature measurements of the cosmic microwave background radiation. (C) 1995 American Institute of Physics.
引用
收藏
页码：4798 / 4805
页数：8
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