Dissociation of Relativistic Nuclei in Peripheral Interactions in Nuclear Track Emulsion

Abstract

Possibilities of the nuclear emulsion technique for the study of the systems of several relativistic fragments produced in the peripheral interactions of relativistic nuclei are discussed. The interactions of the 10 B and 9 Be nuclei in emulsion are taken as an example to show the manifestation of the cluster degrees of freedom in relativistic fragmentation. For the case of the relativistic 9 Be nucleus dissociation it is shown that exact angular measurements play a crucial role in the restoration of the excitation spectrum of the alpha particle fragments. The energy calibration of the angular measurements by the 9 Be nucleus enables one to conclude reliably about the features of internal velocity distributions in more complicated systems of relativistic α particles.

Theory for Quartet Condensation in Fermi Systems with Applications to Nuclei and Nuclear Matter

“…Ideas of this type have been promoted by von Oertzen [44], and also M. Brenner [46], and A. Ogloblin [45]. However, coincidence measurements of multiple α's of decaying lighter nuclei like 16 O may also be very useful [51][52] [53] to detect at least one additional α-condensate state beyond the only one that has been identified so far, namely the 0 2 + -state in 12 C. Another issue which may be raised in the context of α-particle condensation is the question, also discussed in condensed matter physics [54], whether α's condense as singles or as doubles, i.e. as 8 Be.…”