Title of article :
Excitation energy and angular momentum of quasiprojectiles produced in the Xe+Sn collisions at incident energies between 25 and 50 MeV/nucleon Original Research Article
Author/Authors :
J.C. Steckmeyer، نويسنده , , E. Genouin-Duhamel، نويسنده , , E. Vient، نويسنده , , J. Colin، نويسنده , , D. Durand، نويسنده , , G. Auger، نويسنده , , C.O Bacri، نويسنده , , N. Bellaize، نويسنده , , B. Borderie، نويسنده , , R. Bougault، نويسنده , , B. Bouriquet، نويسنده , , R. Brou، نويسنده , , P. Buchet، نويسنده , , J.L. Charvet، نويسنده , , A. Chbihi، نويسنده , , D. Cussol، نويسنده , , R. Dayras، نويسنده , , N. De Cesare، نويسنده , , A. Demeyer، نويسنده , , D. Doré، نويسنده , , et al.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Pages :
31
From page :
537
To page :
567
Abstract :
The excitation energy and angular momentum transferred to quasiprojectiles have been measured in the 129Xe+natSn collisions at bombarding energies between 25 and 50 MeV/nucleon. The excitation energy of quasiprojectiles has been determined from the kinetic energy of all decay products (calorimetry). It increases with the violence of the collision, approaching 10 MeV/nucleon in the most dissipative ones. The angular momentum has been deduced from the kinetic energies and angular distributions of the emitted light charged particles (p, d, t, 3He and α). The (apparent) spin value decreases with the violence of the collision. Larger spin values are observed at the lowest bombarding energy. Data are compared with the predictions of dynamical and statistical models. They reproduce the data in a quantitative way indicating that large spin values are transferred to quasiprojectiles during the interaction. The results show that the one-body dissipation formalism still applies at intermediate bombarding energies and low-energy dissipations. With the increase of the energy, the data seem to be better described when the two-body interaction is accounted for.
Keywords :
Nuclear reactionsnatSn(129Xe+X) , 39 and 50AMeV , Peripheral reactions , Excitation energy , Projectile deexcitation , Statistical and transport model calculations , Heavy-ion interactions , Angular momentum transfer , E=25
Journal title :
Nuclear physics A
Serial Year :
2001
Journal title :
Nuclear physics A
Record number :
1192677
Link To Document :
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