skip to main content

Title: Neutron-driven gamma-ray laser

A lasing cylinder emits laser radiation at a gamma-ray wavelength of 0.87 .ANG. when subjected to an intense neutron flux of about 400 eV neutrons. A 250 .ANG. thick layer of Be is provided between two layers of 100 .ANG. thick layer of .sup.57 Co and these layers are supported on a foil substrate. The coated foil is coiled to form the lasing cylinder. Under the neutron flux .sup.57 Co becomes .sup.58 Co by neutron absorption. The .sup.58 Co then decays to .sup.57 Fe by 1.6 MeV proton emission. .sup.57 Fe then transitions by mesne decay to a population inversion for lasing action at 14.4 keV. Recoil from the proton emission separates the .sup.57 Fe from the .sup.57 Co and into the Be, where Mossbauer emission occurs at a gamma-ray wavelength.
Authors:
 [1]
  1. (Los Alamos, NM)
Publication Date:
OSTI Identifier:
867448
Report Number(s):
US 4939742
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Patent
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Country of Publication:
United States
Language:
English
Subject:
neutron-driven; gamma-ray; laser; lasing; cylinder; emits; laser; radiation; gamma-ray; wavelength; 87; ang; subjected; intense; neutron; flux; 400; neutrons; 250; ang; thick; layer; provided; layers; 100; ang; thick; layer; 57; layers; supported; foil; substrate; coated; foil; coiled; form; lasing; cylinder; neutron; flux; 57; 58; neutron; absorption; 58; decays; 57; mev; proton; emission; 57; transitions; mesne; decay; population; inversion; lasing; action; 14; kev; recoil; proton; emission; separates; 57; 57; mossbauer; emission; occurs; gamma-ray; wavelength; lasing action; thick layer; thick layer; neutron flux; neutron flux; laser radiation; population inversion; neutron absorption; ray wavelength; ray wavelength; mev proton; intense neutron /372/