TITLE

Search for Resonances in the Three- and Four-Neutron Systems in the 7Li(7Li,11C)3n and 7Li(7Li,10C)4n Reactions

AUTHOR(S)
Aleksandrov, D. V.; Nikol'ski&icaron;, E. Yu.; Novatski&icaron;, B. G.; Sakuta, S. B.; Stepanov, D. N.
PUB. DATE
January 2005
SOURCE
JETP Letters;1/25/2005, Vol. 81 Issue 2, p43
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The spectra of the 11C and 10C nuclei from the 7Li(7Li,11C)3n and 7Li(7Li,10C)4n reactions, respectively, have been measured at a 7Li energy of 82 MeV and an angle of 2° up to excitation energies of 20–30 MeV of the desired multineutrons. The experiments were carried out with a magnetic separator, which made it possible to significantly increase the intensity of a beam by removing scattered particles and to carry out small-angle measurements. The energy spectra are well described by four- and five-particle phase spaces. No evidence has been found for the existence of nuclear stable and resonance states (with Γ < 3 MeV) of multineutrons. The upper limits have been obtained for the cross sections for the formation of nuclear stable states of 3n (1.4 nb/sr) and 4n (0.1 nb/sr) in the center-of-mass system. © 2005 Pleiades Publishing, Inc.
ACCESSION #
16658217

 

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