Published September 1999 | Version v1
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Production of neutron-rich isotopes by cold fragmentation in the reaction 197Au + Be at 950 A MeV

Creators

  • 1. Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)
  • 2. Universidad de Santiago de Compostela (Spain)
  • 3. Institut de Physique Nucleaire, 91 - Orsay (France)

Description

The production cross sections and longitudinal-momentum distributions of very neutron-rich isotopes have been investigated in the fragmentation of a 950 A MeV 179Au beam in a beryllium target. Seven new isotopes (193Re, 194Re, 191W, 192W, 189Ta, 187Hf and 188Hf) and the five-proton-removal channel were observed for the first time. The reaction mechanism leading to the formation of these very neutron-rich isotopes is explained in terms of the cold-fragmentation process. An analytical model describing this reaction mechanism is presented. (orig.)

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Available from INIS in electronic form

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Additional details

Publishing Information

Imprint Pagination
17 p.
Report number
GSI--99-35(prepr.)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
31003449
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BERYLLIUM 9 TARGET; EXPERIMENTAL DATA; GEV RANGE 100-1000; GOLD 197 REACTIONS; HAFNIUM ISOTOPES; INTEGRAL CROSS SECTIONS; LONGITUDINAL MOMENTUM; NEUTRON-RICH ISOTOPES; NUCLEAR FRAGMENTATION; RHENIUM ISOTOPES; TANTALUM ISOTOPES; TUNGSTEN 192
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CROSS SECTIONS; DATA; ENERGY RANGE; EVEN-EVEN NUCLEI; GEV RANGE; HEAVY ION REACTIONS; HEAVY NUCLEI; INFORMATION; ISOTOPES; LINEAR MOMENTUM; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; RADIOISOTOPES; TARGETS; TUNGSTEN ISOTOPES