Published May 28, 2012 | Version v1
Journal article Metadata-only

Search for one-phonon mixed-symmetry states in the radioactive nucleus 140Nd

Creators

  • 1. Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia (Bulgaria)
  • 2. Bulgarian Academy of Sciences, Institute for Nuclear Research and Nuclear Energy, 1784 Sofia (Bulgaria)
  • 3. Institut für Kernphysik, Universität zu Köln, D-50937 Köln (Germany)
  • 4. Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt (Germany)

Description

Low-spin excited states of 140Nd have been studied via the 140Ce(3He,3n)140Nd reaction. The results from the data analysis show that one of the candidates for the one-phonon mixed symmetry state of 140Nd, namely the 2+3 state at 2140 keV with an effective lifetime of 220(90) fs, decay with a fast M1 transition to the 2+1 state. Therefore consequently this state can be treated as, at least a fragment of the one-phonon MSS of 140Nd. This is the first example where mixed symmetry character is tentatively assigned to a state of an unstable nucleus from the mass A ≅140 region based on the data on absolute M1 transition rates.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/366/1/012020

Additional details

Identifiers

DOI
10.1088/1742-6596/366/1/012020;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
366
Journal Issue
1
Journal Page Range
[5 p.]
ISSN
1742-6596

Conference

Title
19. international school on nuclear physics, neutron physics and applications
Acronym
VARNA 2011
Dates
19-25 Sep 2011
Place
Varna (Bulgaria)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43104462
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CERIUM 140; CERIUM 140 TARGET; DATA ANALYSIS; EXCITED STATES; HELIUM 3; HELIUM 3 REACTIONS; KEV RANGE; LIFETIME; M1-TRANSITIONS; NEODYMIUM 140; NUCLEAR STRUCTURE; PHONONS; SPIN; SYMMETRY
Descriptors DEC
ANGULAR MOMENTUM; BETA DECAY RADIOISOTOPES; CERIUM ISOTOPES; CHARGED-PARTICLE REACTIONS; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HELIUM ISOTOPES; INTERMEDIATE MASS NUCLEI; ISOTOPES; LIGHT NUCLEI; MULTIPOLE TRANSITIONS; NEODYMIUM ISOTOPES; NUCLEAR REACTIONS; NUCLEI; PARTICLE PROPERTIES; QUASI PARTICLES; RADIOISOTOPES; RARE EARTH NUCLEI; STABLE ISOTOPES; TARGETS