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Title: Ultrafast neutron detector

The invention comprises a neutron detector (50) of very high temporal resolution that is particularly well suited for measuring the fusion reaction neutrons produced by laser-driven inertial confinement fusion targets. The detector comprises a biased two-conductor traveling-wave transmission line (54, 56, 58, 68) having a uranium cathode (60) and a phosphor anode (62) as respective parts of the two conductors. A charge line and Auston switch assembly (70, 72, 74) launch an electric field pulse along the transmission line. Neutrons striking the uranium cathode at a location where the field pulse is passing, are enabled to strike the phosphor anode and produce light that is recorded on photographic film (64). The transmission line may be variously configured to achieve specific experimental goals.
Authors:
 [1]
  1. (Livermore, CA)
Publication Date:
OSTI Identifier:
866261
Report Number(s):
US 4667107
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Country of Publication:
United States
Language:
English
Subject:
ultrafast; neutron; detector; comprises; neutron; detector; 50; temporal; resolution; particularly; suited; measuring; fusion; reaction; neutrons; produced; laser-driven; inertial; confinement; fusion; targets; detector; comprises; biased; two-conductor; traveling-wave; transmission; line; 54; 56; 58; 68; uranium; cathode; 60; phosphor; anode; 62; respective; conductors; charge; line; auston; switch; assembly; 70; 72; 74; launch; electric; field; pulse; transmission; line; neutrons; striking; uranium; cathode; location; field; pulse; passing; enabled; strike; phosphor; anode; produce; light; recorded; photographic; film; 64; transmission; line; variously; configured; achieve; specific; experimental; goals; switch assembly; neutrons produced; neutrons striking; confinement fusion; fusion targets; inertial confinement; fast neutron; electric field; transmission line; transmission line; transmission line; neutron detector; neutron detector; fusion target; photographic film; fusion reaction; detector comprises; charge line; temporal resolution; field pulse; field pulse; produce light /250/376/