An experiment to measure the electron neutrino mass using a cryogenic tritium source

Conference · Tue Jun 25 00:00:00 EDT 1985

OSTI ID:6404064

Fackler, O; Jeziorski, B; Kolos, W; Monkhorst, H; Mugge, M; Sticker, H; Szalewicz, K; White, R M; Woerner, R

An experiment has been performed to determine the electron neutrino mass with the precision of a few eV by measuring the tritium beta decay energy distribution near the endpoint. Key features of the experiment are a 2 eV resolution electrostatic spectrometer and a high-activity frozen tritium source. It is important that the source have electronic wavefunctions which can be accurately calculated. These calculations have been made for tritium and the HeT/sup +/ daughter ion and allow determination of branching fractions to 0.1% and energy of the excited states to 0.1 eV. The excited final molecular state calculations and the experimental apparatus are discussed. 4 refs., 5 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Rockefeller Univ., New York (USA); Warsaw Univ. (Poland); Waterloo Univ., Ontario (Canada); Florida Univ., Gainesville (USA); Fermi National Accelerator Lab., Batavia, IL (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6404064
• Report Number(s): UCRL-92902; CONF-8504305-1; ON: DE87009587
• Resource Relation: Conference: Recontres de Moriond conference on weak interactions, Les Arcs, France, 23 Apr 1985; Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ELECTRON NEUTRINOS
MASS
HELIUM TRITIDES
ROTATIONAL STATES
VIBRATIONAL STATES
TRITIUM
BETA-MINUS DECAY
BRANCHING RATIO
COBALT 57
CONVERSION
CRYOGENICS
ELECTROSTATIC SPECTROMETERS
FERMI PLOT
PERFORMANCE TESTING
THEORETICAL DATA
WAVE FUNCTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COBALT ISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
DECAY
DIAGRAMS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EXCITED STATES
FERMIONS
FUNCTIONS
HELIUM COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LABELLED COMPOUNDS
LEPTONS
LIGHT NUCLEI
MASSLESS PARTICLES
MEASURING INSTRUMENTS
NEUTRINOS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
RADIOISOTOPES
RARE GAS COMPOUNDS
SPECTROMETERS
TESTING
TRITIUM COMPOUNDS
YEARS LIVING RADIOISOTOPES
645200* - High Energy Physics- Particle Interactions & Properties-Theoretical
653005 - Nuclear Theory- Radioactive Decay
440103 - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation