Published December 27, 2004 | Version v1
Journal article Metadata-only

Nuclear spin orientation of 12,13B created in heavy ion collisions

Creators

  • 1. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
  • 2. TRIUMF, Vancouver, B.C., V6T 2A3 (Canada)
  • 3. Cyclotron RI Center, Tohoku University, Sendai, Miyagi 980-8578 (Japan)
  • 4. Kochi University of Technology, Tosayamada, Kochi 782-8502 (Japan)
  • 5. National Institute of Radiological Sciences, Inage, Chiba 263-0024 (Japan)
  • 6. Lawrence Berkeley Laboratory, CA 94720 (United States)
  • 7. China Institute of Atomic Energy, Beijing 102413 (China)

Description

The momentum dependences of the nuclear spin polarization P and alignment A of 12B (Iπ = 1+, T1/2 = 20.20 ms) [13B (Iπ = 3/2-, T1/2 = 17.36 ms)] produced in 100AMeV 13C [15N] + Be collisions have been measured by detecting the β-ray asymmetry. Because both the P and A were significantly smaller than the prediction from a simple kinematical model, some depolarization mechanisms must be taken into account related with the collision process itself. Comparing the signs of the observed alignment of 12B and 13B, the sign of the quadrupole moment Q(13B) was determined to be positive

Additional details

Identifiers

DOI
10.1016/j.nuclphysa.2004.09.078;
PII
S0375-9474(04)01038-3;

Publishing Information

Journal Title
Nuclear Physics. A
Journal Volume
746
Journal Issue
3-4
Journal Page Range
p. 505-508
ISSN
0375-9474
CODEN
NUPABL

Conference

Title
6. international conference on radioactive nuclear beams
Acronym
RNB6
Dates
22-26 Sep 2003
Place
Argonne, IL (United States)

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36049338
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ASYMMETRY; BERYLLIUM 9 TARGET; BORON 12; BORON 13; CARBON 13 REACTIONS; DEPOLARIZATION; NITROGEN 15 REACTIONS; QUADRUPOLE MOMENTS; SPIN ORIENTATION
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BORON ISOTOPES; HEAVY ION REACTIONS; ISOTOPES; LIGHT NUCLEI; MILLISECONDS LIVING RADIOISOTOPES; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; ORIENTATION; RADIOISOTOPES; TARGETS

Optional Information

Copyright
Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.