Dependence of the mechanism of inelastic dissociation of a relativistic carbon nucleus into three α particles on its excitation energy
Belaga V. V. , Muminov M. M. Jr. , Chernov G. M.
A characteristic nonmonotonic dependence of the degree of collinearity of the transverse momenta of a particles in the azimuthal plane of the reaction 12C —> 3 a at 4.2 GeV/c per nucleon on the excitation energy of the carbon nucleus has been observed. The data are consistent with a change from the mechanism of successive binary disintegrations (12C —> 8Be + a—> За) to direct multifragmentation and a subsequent increase in the angular momentum of the fragmenting system with increasing "temperature" of the system. © 1995 American Institute of Physics.
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![](/ps/1216/article_18385_800_head.png "A characteristic nonmonotonic dependence of the degree of collinearity of the transverse momenta of <i>a </i>particles in the azimuthal plane of the reaction <sup>12</sup>C —> 3 a at 4.2 GeV/c per nucleon on the excitation energy of the carbon nucleus has been observed. The data are consistent with a change from the mechanism of successive binary disintegrations (<sup>12</sup>C —> <sup>8</sup>Be + a—> За) to direct multifragmentation and a subsequent increase in the angular momentum of the fragmenting system with increasing "temperature" of the system. © <i>1995 American Institute of Physics.</i>")