Published December 2004 | Version v1
Journal article Metadata-only

Medium-spin excitations of the neutron-rich 84Se isotope: Possible decrease in energy of the N=50 neutron-core excitation

Creators

  • 1. IN2P3-CNRS/Universite Paris-Sud, CSNSM, Orsay (France)
  • 2. IN2P3-CNRS/Universite Louis Pasteur, IReS, Strasbourg Cedex 2 (France)
  • 3. IN2P3-CNRS/Universite Claude Bernard, IPNL, Villeurbanne Cedex (France)
  • 4. BAS, INRNE, Sofia (Bulgaria)
  • 5. DSM/DAPNIA/SPhN, CEA/Saclay, Gif-sur-Yvette Cedex (France)
  • 6. Joliot-Curie 6, JINR, Dubna, Moscow region (Russian Federation)

Description

The 84Se nucleus has been produced as fission fragment in the fusion reaction 18O+208Pb at 85MeV bombarding energy and studied with the Euroball IV array. Medium-spin states of this neutron-rich isotope have been identified for the first time. Its level scheme has been obtained up to 4.9MeV excitation energy and spin I∝7ℎ. Its structure is interpreted by analogy with those of the stable heavier isotones. The evolution of the energy of the N=50 neutron-core excitation is discussed as a function of the proton number. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2004-10063-3

Additional details

Identifiers

DOI
10.1140/epja/i2004-10063-3;

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
22
Journal Issue
3
Journal Page Range
p. 391-395
ISSN
1434-6001

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
36025019
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
DE-EXCITATION; ENERGY SPECTRA; EXPERIMENTAL DATA; FISSION FRAGMENTS; GAMMA SPECTRA; LEAD 208 TARGET; MEV RANGE 10-100; OXYGEN 18 REACTIONS; QUASI-FISSION; ROTATIONAL STATES; SELENIUM 84
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DATA; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EXCITED STATES; HEAVY ION REACTIONS; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOTOPES; MEV RANGE; MINUTES LIVING RADIOISOTOPES; NUCLEAR FRAGMENTS; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; RADIOISOTOPES; SELENIUM ISOTOPES; SPECTRA; TARGETS