Charged-particle magnetic-quadrupole spectrometer for neutron induced reactions
A spectrometer has been developed for measuring the charged particle production cross sections and spectra in neutron-induced reactions. The spectrometer consists of a magnetic quadrupole doublet which focuses the charged particles onto a silicon surface barrier detector telescope which is 2 meters or more from the irradiated sample. Collimators, shielding, and the large source-to- detector distance reduce the background enough to use the spectrometer with a 14- MeV neutron source producing 4 . 10$sup 12$ n/s. The spectrometer has been used in investigations of proton, deuteron, and alpha particle production by 14-MeV neutrons incident on various materials. Protons with energies as low as 1.1 MeV have been measured. The good resolution of the detectors has also made possible an improved measurement of the neutron- neutron scattering length from the 0$sup 0$ proton spectrum from deuteron breakup by 14-MeV neutrons. (auth)
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-33-020305
- OSTI ID:
- 4083813
- Report Number(s):
- UCRL--77151; CONF-751088--1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
*NEUTRON REACTIONS
440103* --Instrumentation--Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
COLLIMATORS
N46130* --Instrumentation--Radiation Detection Instruments-- Nuclear Spectroscopic Instrumentation
SHIELDING
SI SEMICONDUCTOR DETECTORS
SURFACE BARRIER DETECTORS
TELESCOPE COUNTERS