Status of the Los Alamos tritium beta decay experiment

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6320250

Robertson, R G.H.; Bowles, T J; Wark, D L; Wilkerson, J F; Knapp, D A

The Los Alamos tritium experiment employs a gaseous tritium source and a magnetic spectrometer to determine the mass of the electron antineutrino from the shape of the tritium beta spectrum. Since publication of the first result from this apparatus (m/sub nu/ < 27 eV at 95% confidence), work has concentrated on improving the data rates. A 96-element Si microstrip array detector has been installed to replace the single proportional counter at the spectrometer focus, resulting in greatly increased efficiency. Measurements of the 1s photoionization spectrum of Kr now obviate the need for reliance on the theoretical shakeup and shakeoff spectrum of Kr in determining the spectrometer resolution. 19 refs., 3 figs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6320250
• Report Number(s): LA-UR-89-1173; CONF-890199-3; ON: DE89011193
• Resource Relation: Conference: 8. Moriond workshop on tests of fundamental laws in physics, Les Arcs, France, 1 Jan 1989; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
TRITIUM
ENERGY SPECTRA
BETA DECAY
CALIBRATION
DETECTION
ELECTRON ANTINEUTRINOS
ENERGY RESOLUTION
KRYPTON
MAGNETIC SPECTROMETERS
PHOTOIONIZATION
PROGRESS REPORT
ANTILEPTONS
ANTIMATTER
ANTINEUTRINOS
ANTIPARTICLES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DECAY
DOCUMENT TYPES
ELECTRON NEUTRINOS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUIDS
GASES
HYDROGEN ISOTOPES
IONIZATION
ISOTOPES
LEPTONS
LIGHT NUCLEI
MASSLESS PARTICLES
MEASURING INSTRUMENTS
NEUTRINOS
NONMETALS
NUCLEAR DECAY
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
RARE GASES
RESOLUTION
SPECTRA
SPECTROMETERS
YEARS LIVING RADIOISOTOPES
645102* - High Energy Physics- Particle Interactions &amp; Properties-Experimental- Weak Interactions &amp; Properties
651220 - Nuclear Properties &amp; Reactions
A=1-5
Experimental