A BROAD RANGE MAGNETIC NEUTRON SPECTROMETER.
Abstract
A broad range, low deflection, magnetic neutron spectrometer was designed and constructed to measure the neutron spectra from pulsed and steady state sources. The instrument will cover an energy range of 0.5 to 17 Mev with a single magnetic field setting and is designed to provide energy resolution of approximately 10 percent. A collimated beam of neutrons is allowed to impinge on a thin polyethylene radiator producing recoil protons. A small forward cone of these protons, corresponding to the full energies of the incident neutrons, enters the magnetic field. The protons are analyzed and focused at a point outside the magnetic field. The focal line is straight and forms an angle of 10 degrees with the pole-piece edge. With 6 Mev neutrons, a 0.001 inch radiator, and a 0.5 inch slit width, the energy resolution is 7.7 percent and the efficiency is 6.3 x 10 to the -8th power counts per incident neutron. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1966
- Accession Number
- AD0638137
Entities
People
- Carmen M. Cialella
Organizations
- Ballistic Research Laboratory