Eur. Phys. J. A (2006) 27: 295-300
https://doi.org/10.1140/epja/i2006-08-045-2

Nuclear Physics in Astrophysics II

Clustering in light nuclei in fragmentation above 1 A GeV

¹ Institute for Physics and Technology, Almaty, Republic of Kazakhstan
² Joint Institute for Nuclear Research, Dubna, Russia
³ Lebedev Institute of Physics, Russian Academy of Sciences, Moscow, Russia
⁴ Institute of Space Sciences, Magurele, Romania
⁵ Yerevan Physics Institute, Yerevan, Armenia
⁶ Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria
⁷ P.J. Safărik University, Kosice, Slovak Republic

Received: 20 June 2005
Accepted: 20 December 2005
Published online: 14 March 2006

Abstract

The relativistic invariant approach is applied to analyzing the 3.3 A GeV ²²Ne fragmentation in a nuclear track emulsion. New results on few-body dissociations have been obtained from the emulsion exposures to 2.1 A GeV ¹⁴N and 1.2 A GeV ⁹Be nuclei. It can be asserted that the use of the invariant approach is an effective means of obtaining conclusions about the behavior of systems involving a few He nuclei at a relative energy close to 1MeV per nucleon. The first observations of fragmentation of 1.2 A GeV ⁸B and ⁹C nuclei in emulsion are described. The presented results allow one to justify the development of few-body aspects of nuclear astrophysics.