Incomplete Fusion in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> + <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Gd</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>160</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> Collisions Interpreted in Terms of a Generalized Concept of Critical Angular Momentum

K. Siwek-Wilczyńska; E. H. du Marchie van Voorthuysen; J. van Popta; R. H. Siemssen; J. Wilczyński

doi:10.1103/PhysRevLett.42.1599

Incomplete Fusion in ${}^{12}C$ + ${}^{160}{Gd}$ Collisions Interpreted in Terms of a Generalized Concept of Critical Angular Momentum

K. Siwek-Wilczyńska, E. H. du Marchie van Voorthuysen, J. van Popta, R. H. Siemssen, and J. Wilczyński

Phys. Rev. Lett. 42, 1599 – Published 11 June 1979

Abstract

The energy dependence of incomplete-fusion reactions ${}^{160}{Gd}$ ( ${}^{12}C$ , $α$ ) and ${}^{160}{Gd}$ ( ${}^{12}C$ , $2 α$ ) has been studied by means of $α - γ$ coincidences in the range of bombarding energies 7.5-16.7 MeV/A. Excitation functions are interpreted in terms of a generalized concept of critical angular momentum. An energy threshold (of about 15 MeV/A) is predicted at which projectile fragmentation processes set in rapidly at the cost of the decreasing cross section for binary massive-transfer reactions.

Received 5 March 1979

DOI:https://doi.org/10.1103/PhysRevLett.42.1599

Authors & Affiliations

K. Siwek-Wilczyńska^*, E. H. du Marchie van Voorthuysen, J. van Popta, R. H. Siemssen, and J. Wilczyński^†

Kernfysisch Versneller Instituut, Groningen, The Netherlands

^*Permanent address: Institute of Experimental Physics, University of Warsaw, 00-681 Warsaw, Poland.
^†Permanent address: Institute of Nuclear Physics, 31-342 Cracow, Poland.