公开(公告)号：US3517194A

公开(公告)日：1970-06-23

申请号：US3517194D

申请日：1968-10-24

Applicant: ATOMIC ENERGY COMMISSION

Inventor： BORKOWSKI CASIMER J ,  KOPP MANFRED K

IPC: G01T1/18 ,  G01T1/29 ,  H01J47/06 ,  H01J39/04

CPC classification number: G01T1/2935 ,  H01J47/06

公开(公告)号：US3288999A

公开(公告)日：1966-11-29

申请号：US31785363

申请日：1963-10-21

Applicant: BORKOWSKI CASIMER J ,  FERRARI ANGEL M R ,  FOX RICHARD J

Inventor： BORKOWSKI CASIMER J ,  FERRARI ANGEL M R ,  FOX RICHARD J

IPC: H01J47/06

CPC classification number: H01J47/06

公开(公告)号：US3229091A

公开(公告)日：1966-01-11

申请号：US28218563

申请日：1963-05-21

Applicant: SINCLAIR KENNETH F

Inventor： SINCLAIR KENNETH F

IPC: G01T1/20 ,  H01J47/06

CPC classification number: G01T1/20 ,  H01J47/06

公开(公告)号：US2998522A

公开(公告)日：1961-08-29

申请号：US67933357

申请日：1957-08-21

Applicant: GEN DYNAMICS CORP

Inventor： MARTIN TROY C ,  GREEN OTTIS E

IPC: H01J47/06

CPC classification number: H01J47/06

公开(公告)号：US2882418A

公开(公告)日：1959-04-14

申请号：US44705454

申请日：1954-08-02

Applicant: PHILIPS CORP

Inventor： HENDEE CHARLES F ,  SAMUEL FINE

IPC: G01N23/223 ,  H01J47/06

CPC classification number: G01N23/223 ,  G01N2223/076 ,  H01J47/06

公开(公告)号：US2837678A

公开(公告)日：1958-06-03

申请号：US43783154

申请日：1954-06-18

Applicant: PHILIPS CORP

Inventor： HENDEE CHARLES F ,  SAMUEL FINE

IPC: H01J47/06

CPC classification number: H01J47/06

公开(公告)号：US2835839A

公开(公告)日：1958-05-20

申请号：US51234055

申请日：1955-05-31

Applicant: BORZIN JOHN J

Inventor： BORZIN JOHN J

IPC: H01J47/06

CPC classification number: H01J47/06

公开(公告)号：US2509700A

公开(公告)日：1950-05-30

申请号：US73017447

申请日：1947-02-21

Applicant: ATOMIC ENERGY COMMISSION

Inventor： SIMPSON JR JOHN A

IPC: H01J47/06

CPC classification number: H01J47/06

公开(公告)号：US20170256378A1

公开(公告)日：2017-09-07

申请号：US15512518

申请日：2015-09-10

Applicant: FUJIKURA LTD.

Inventor： Daisuke Arai

IPC: H01J1/46 ,  H01J9/14 ,  H01J47/06

CPC classification number: H01J1/46 ,  G01T1/18 ,  H01J9/14 ,  H01J47/02 ,  H01J47/06

Abstract: An ion filter used for an electron multiplier includes an insulating substrate; a first conductive layer formed on one main surface of the substrate; and a second conductive layer formed on another main surface of the substrate. The ion filter has a plurality of through-holes formed along a thickness direction of the substrate. The one main surface of the substrate is disposed at a downstream side in a moving direction of electrons in a chamber of the electron multiplier and the other main surface of the substrate is disposed at an upstream side in the moving direction of electrons in the chamber of the electron multiplier. A first thickness of the first conductive layer formed on the one main surface of the substrate is thicker than a second thickness of the second conductive layer on the other main surface of the substrate.

公开(公告)号：US09519067B1

公开(公告)日：2016-12-13

申请号：US12886616

申请日：2010-09-21

Applicant: Hiroshi Kitaguchi ,  Takahiro Tadokoro ,  Katsunori Ueno ,  Hitoshi Kuwabara

Inventor： Hiroshi Kitaguchi ,  Takahiro Tadokoro ,  Katsunori Ueno ,  Hitoshi Kuwabara

IPC: G01T1/18 ,  G01T1/185 ,  G01T1/29 ,  H01J47/06 ,  H01J47/02

CPC classification number: G01M3/20 ,  G01N23/22 ,  G01N33/0027 ,  G01N33/0055 ,  G01T1/18 ,  G01T1/185 ,  G01T1/2935 ,  H01J47/02 ,  H01J47/06

Abstract: A radioactive gas measurement apparatus comprises: a radiation measurement cell comprising an inlet pipe and a discharge pipe, the radiation measurement cell introducing and discharging a radioactive gas containing a nuclide to be measured and a positron emitter nuclide through the inlet pipe and the discharge pipe; a radiation detector for measuring a radiation generated from the radioactive gas; and a radiation collimator allowing the radiation measurement cell to communicate with the radiation detector and setting a predetermined radiation measurement geometry condition between the radiation measurement cell and the radiation detector. Then, as the predetermined radiation measurement geometry condition, an inner wall area of the radiation measurement cell which the radiation detector views through the radiation collimator is set equal to or less than a half of a total inner wall area of the radiation measurement cell.

Abstract translation: 一种放射性气体测量装置，包括：放射线测量单元，包括入口管和排出管，所述辐射测量单元通过所述入口管和所述排放管引入并排出包含要测量的核素和正电子发射体核素的放射性气体; 用于测量由放射性气体产生的辐射的辐射检测器; 以及辐射准直器，其允许辐射测量单元与辐射检测器通信并且在辐射测量单元和辐射检测器之间设置预定的辐射测量几何状态。 然后，作为预定的辐射测量几何状态，放射线检测器通过辐射准直仪观察的辐射测量单元的内壁面积被设定为等于或小于辐射测量单元的总内壁面积的一半。