-
1.发明授权Radiometer apparatus comprising a volume of gas whose pressure is cyclically varied 失效包含压力为周期性气体的放射性计量装置
公开(公告)号：US3617737A
公开(公告)日：1971-11-02
申请号：US3617737D
申请日：1969-07-09
申请人： NAT RES DEV
CPC分类号： G01N21/3518
摘要： The invention concerns apparatus for detecting radiation emitted from a quantity of gas, said apparatus comprising a chamber containing a predetermined amount of a given component of said gas having absorption lines in a band of the emission spectrum, means for cyclically varying the pressure of said component in said chamber, and detector means adapted to provide an output signal which is dependent on the radiation intensity wavelengths of the absorption lines or at predetermined wavelengths in the region thereof, said wavelengths being such that the absorption coefficients of the gas at all detected wavelengths are substantially the same, and the radiation is known to originate predominantly from a particular region of the said quantity of gas.
搜索结果
1 条记录 (耗时 0.009 秒)
筛选
AND
AND
过滤
NOT
NOT
扫码加群
