A Backscatter Suppressed Electron Detector for the Measurement of "a".
A new method of measuring the electron-antineutrino angular correlation coefficient, little "a", from neutron decay-to be performed at the National Institute of Standards and Technology-will require an electron spectrometer that strongly suppresses backscattered electrons. A prototype consisting of six trapezoidal veto detectors arranged around a plastic scintillator has been tested with an electron beam produced by a Van de Graaff accelerator. The results of this test and its implications for the little "a" measurement are discussed.
DePauw University, Greencastle, IN 46135.
A
A
Komives
Tulane University, New Orleans, LA 70118.
F E
FE
Wietfeldt
Tulane University, New Orleans, LA 70118.
C
C
Trull
National Institute of Standards and Technology, Gaithersburg, MD 20899.
F B
FB
Bateman
National Institute of Standards and Technology, Gaithersburg, MD 20899.
M S
MS
Dewey
National Institute of Standards and Technology, Gaithersburg, MD 20899.
A K
AK
Thompson
Hamilton College, Clinton, NY 13323.
R
R
Anderman
Kurchatov Institute, Moscow, Russia.
S
S
Balashov
Kurchatov Institute, Moscow, Russia.
Yu
Y
Mostovoy
beta decay; electron spectroscopy; neutron decay; scintillation detectors