发明名称 |
Detector for heavy ions following mass analysis |
摘要 |
A hot surface detector for heavy ions following their separation on the basis of charge-to-mass ratio. Upon striking the hot surface, the heavy ions decompose and give up their lighter constituent and/or impurity atoms and molecules to the surface. Those constituent and/or impurity atoms and molecules with ionization potentials or electron affinities comparable to the work function of the hot surface become surface ionized and are emitted from the surface as a burst of either positive or negative ions which are then detected by conventional means, including detection at an electrode, by an electron multiplier or by a mass spectrometric detector for light ions. Where negative ions are to be detected, a magnetic field is applied to prevent electrons from the hot surface from reaching the detector.
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申请公布号 |
US4093855(A) |
申请公布日期 |
1978.06.06 |
申请号 |
US19760711231 |
申请日期 |
1976.08.03 |
申请人 |
EXTRANUCLEAR LABORATORIES, INC. |
发明人 |
FITE, WADE L.;MYERS, RICHARD L. |
分类号 |
G01N27/62;H01J49/02;(IPC1-7):H01J39/34 |
主分类号 |
G01N27/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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