公开(公告)号：US3916188A

公开(公告)日：1975-10-28

申请号：US43469574

申请日：1974-01-18

Applicant: ANVAR

Inventor： DEVIENNE FERNAND MARCEL

IPC: H01J49/10 ,  G01N27/62 ,  H01J49/14 ,  H01J49/28 ,  H01J39/34 ,  B01D59/44

CPC classification number: H01J49/286 ,  H01J49/14

Abstract: Electrostatic filtration of secondary ions of mass m in a given mass ratio with a primary ion of mass M which has formed the secondary ions by fission is carried out by a method which consists in forming a singly-charged primary ion of the substance having a molecular mass M and extracting the ion at a voltage V1 with respect to ground, in causing the primary ion to cross a potential barrier V2, in producing the dissociation of said ion into at least two fragments of secondary ions, in extracting the fragment ion of mass m at a voltage V2, in carrying out a filtration in an electrostatic analyzer through which only the ions of energy eV'''' are permitted to pass, in detecting the ions which have thus been filtered and the mass m of which is such that

D R A W I N G

Abstract translation: 通过裂变形成二次离子的质量为M的质量m的质量m的二次离子的静电过滤通过一种方法进行，该方法包括形成具有分子的物质的单一带电的一次离子 质量M并且以相对于地面的电压V1提取离子，在使主离子穿过势垒V2时，在产生质量的碎片离子中产生离子到至少两个次级离子的片段中的解离 在电压V2下进行过滤，在静电分析仪中进行过滤，在静电分析仪中仅允许能量eV“的离子通过，以检测已经被过滤的离子，其质量m使得M V1 - V2 =。 m V“ - V2