Published July 2, 1987 | Version v1
Journal article Metadata-only

Delayed fission from the antiproton annihilation in 209Bi - evidence for hypernuclear decay

Creators

  • 1. CEA Centre d'Etudes Nucleaires de Grenoble, 38 (France)
  • 2. Paris-11 Univ., 91 - Orsay (France). Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse
  • 3. Uppsala Univ. (Sweden). Gustaf Werner Inst.
  • 4. Nationaal Inst. voor Kernfysica en Hoge-Energiefysica (NIKHEF), Nijmegen (Netherlands)
  • 5. Warsaw Univ., Bialystok (Poland)
  • 6. CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
  • 7. Gesellschaft fuer Schwerionenforschung m.b.H., Darmstadt (Germany, F.R.)

Description

Delayed fission following the annihilation of stopped antiprotons in 209Bi has been observed with a yield of approximately 3x10-4. The lifetime for delayed fission as measured by the recoil-distance technique is (2.5(+2.5-1.0)x10-10s. The observed delayed fission is interpreted as resulting from the decay of hypernuclei in the region of masses near 200 produced in the annihilation of antiprotons in 209Bi. (orig.)

Additional details

Publishing Information

Journal Title
Phys. Lett., B
Journal Volume
192
Journal Issue
3/4
Series
Phys. Lett., B.
Journal Page Range
312-314
ISSN
0370-2693
CODEN
PYLBA

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
18093233
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ANGULAR CORRELATION; ANNIHILATION; ANTIPROTON REACTIONS; BISMUTH 209 TARGET; FISSION FRAGMENTS; HEAVY NUCLEI; HYPERNUCLEI; INTERMEDIATE MASS NUCLEI; LIFETIME; SPONTANEOUS FISSION
Descriptors DEC
ANTINUCLEON REACTIONS; BARYON REACTIONS; CORRELATIONS; DECAY; FISSION; HADRON REACTIONS; INTERACTIONS; NUCLEAR DECAY; NUCLEAR FRAGMENTS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; PARTICLE INTERACTIONS; TARGETS