Published 1994 | Version v1
Journal article Metadata-only

Tracking electrons from double beta decay - how far can you push the TPC?

Creators

  • 1. California Univ., Irvine, CA (United States). Dept. of Physics

Description

New results are reported from time-projection-chamber measurements of the double beta decay of 100Mo and 150Nd. A previously-observed high-energy anomaly has been eliminated by improved energy resolution. Kurie plots of the two-neutrino spectra show end-point energies close to the reported parent-daughter mass differences. The 150Nd source has produced a new direct-counting 90% confidence neutrino-majoron coupling limit of < gν,χ) > < 7.0 x 10-5. The strengths and weaknesses of the TPC, and the feasibility of a larger TPC for neutrinoless double beta decay are discussed. (Author)

Additional details

Publishing Information

Journal Title
Progress in Particle and Nuclear Physics
Journal Volume
32
Journal Page Range
p. 247-260.
ISSN
0146-6410
CODEN
PPNPDB

Conference

Title
International School of Nuclear Physics meeting on neutrinos in cosmology, astro, particle and nuclear physics.
Dates
8-17 Sep 1993.
Place
Erice (Italy).

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
25053714
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
DOUBLE BETA DECAY; ELECTRONS; ENERGY RESOLUTION; EXPERIMENTAL DATA; MAJORANA THEORY; MOLYBDENUM 100; NEODYMIUM 150; NEUTRINO DETECTION; TIME PROJECTION CHAMBERS
Descriptors DEC
BETA DECAY; BETA-MINUS DECAY; DATA; DECAY; DETECTION; DRIFT CHAMBERS; ELEMENTARY PARTICLES; EVEN-EVEN NUCLEI; FERMIONS; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOTOPES; LEPTONS; MEASURING INSTRUMENTS; MOLYBDENUM ISOTOPES; MULTIWIRE PROPORTIONAL CHAMBERS; NEODYMIUM ISOTOPES; NUCLEAR DECAY; NUCLEI; NUMERICAL DATA; PROPORTIONAL COUNTERS; RADIATION DETECTION; RADIATION DETECTORS; RARE EARTH NUCLEI; RESOLUTION; STABLE ISOTOPES