Neutron-driven gamma-ray laser
Abstract
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.
- Inventors:
-
- Los Alamos, NM
- Issue Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 867448
- Patent Number(s):
- 4939742
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- neutron-driven; gamma-ray; laser; lasing; cylinder; emits; radiation; wavelength; 87; ang; subjected; intense; neutron; flux; 400; neutrons; 250; thick; layer; provided; layers; 100; 57; supported; foil; substrate; coated; coiled; form; 58; absorption; decays; mev; proton; emission; transitions; mesne; decay; population; inversion; action; 14; kev; recoil; separates; mossbauer; occurs; lasing action; thick layer; neutron flux; laser radiation; population inversion; neutron absorption; ray wavelength; mev proton; intense neutron; /372/
Citation Formats
Bowman, Charles D. Neutron-driven gamma-ray laser. United States: N. p., 1990.
Web.
Bowman, Charles D. Neutron-driven gamma-ray laser. United States.
Bowman, Charles D. Mon .
"Neutron-driven gamma-ray laser". United States. https://www.osti.gov/servlets/purl/867448.
@article{osti_867448,
title = {Neutron-driven gamma-ray laser},
author = {Bowman, Charles D},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}