公开(公告)号：EP2652526A4

公开(公告)日：2018-02-28

申请号：EP11841467

申请日：2011-11-11

申请人： SERVICES PÉTROLIERS SCHLUMBERGER ,  SCHLUMBERGER HOLDINGS ,  SCHLUMBERGER TECHNOLOGY BV ,  PRAD RES AND DEVELOPMENT LIMITED

发明人： STEPHENSON KEN ,  STOLLER CHRISTIAN ,  PHILIP OLIVIER G

IPC分类号： G01T3/00 ,  G01T1/28

CPC分类号： G01T3/00 ,  G01T1/28 ,  G01V5/04 ,  G01V5/107 ,  H01J47/1205

摘要： A neutron detecting device using a neutron-reactive material as the source of charged particles to feed conventional dynode-based electron multiplier which not gas-filled (i.e., with 3He). The detector comprises a neutron-reacting material that produces charged particles, coupled with an electron multiplier that is known for use in photomultipliers. The neutron-reacting material is deposited on a substrate at the entrance to the electron multiplier. Charged particles from the neutron-reacting material impinge on the first dynode of the electron multiplier, where, in turn, electrons are generated. The secondary electrons are collected by a second dynode, and the charge so collected is amplified in each succeeding dynode stage in a cascade effect. The charge pulse from the anode is processed by subsequent pulse processing electronics and counting electronics to provide a count rate that is proportional to the neutron flux incident on the neutron-reacting material.

公开(公告)号：EP2569799A1

公开(公告)日：2013-03-20

申请号：EP11781315.4

申请日：2011-05-12

申请人： Lacy, Jeffrey L.

发明人： Lacy, Jeffrey L.

IPC分类号： H01J47/02

CPC分类号： H01J47/1205 ,  G01T3/00 ,  G01T3/008 ,  G01T3/06

摘要： The present invention is a method and apparatus for operating boron-coated straw detectors in sealed mode, without the need for a continuous flow of gas. Sealed-mode operation is necessary when using the boron-coated straw detectors in the field, where access to a continuous flow of the required gas mixture is not practical. Also, sealed-mode operation is necessary when the straw detectors are used as portable instruments, that must be moved from one location to the next swiftly, or that must be operated while in motion.

公开(公告)号：EP2569799A4

公开(公告)日：2015-01-21

申请号：EP11781315

申请日：2011-05-12

申请人： PROPORTIONAL TECHNOLOGIES INC

发明人： LACY JEFFREY L

IPC分类号： H01J47/02 ,  G01T3/00 ,  H01J47/12

CPC分类号： H01J47/1205 ,  G01T3/00 ,  G01T3/008 ,  G01T3/06

公开(公告)号：EP2652526A2

公开(公告)日：2013-10-23

申请号：EP11841467.1

申请日：2011-11-11

申请人： Services Pétroliers Schlumberger ,  Schlumberger Holdings Limited ,  Schlumberger Technology B.V. ,  Prad Research And Development Limited

发明人： STEPHENSON, Ken ,  STOLLER, Christian ,  PHILIP, Olivier G.

IPC分类号： G01T3/00 ,  G01V5/04

CPC分类号： G01T3/00 ,  G01T1/28 ,  G01V5/04 ,  G01V5/107 ,  H01J47/1205

摘要： A neutron detecting device using a neutron-reactive material as the source of charged particles to feed conventional dynode-based electron multiplier which not gas-filled (i.e., with 3He). The detector comprises a neutron-reacting material that produces charged particles, coupled with an electron multiplier that is known for use in photomultipliers. The neutron-reacting material is deposited on a substrate at the entrance to the electron multiplier. Charged particles from the neutron-reacting material impinge on the first dynode of the electron multiplier, where, in turn, electrons are generated. The secondary electrons are collected by a second dynode, and the charge so collected is amplified in each succeeding dynode stage in a cascade effect. The charge pulse from the anode is processed by subsequent pulse processing electronics and counting electronics to provide a count rate that is proportional to the neutron flux incident on the neutron-reacting material.