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Chinese Physics C> 1977, Vol. 1> Issue(1) : 70-78 

α PARTICLES EMITTED IN THE REACTION OF 12C ON 209Bi

  • The energy spectra and angular distributions of alpha particles emitted in the reaction of 12C on 209Bi in the energy range 61.1—73.0 MeV were observed.The △E— E detector system was used to separate alpha particles and other particles emitted in this reaction.The results can be interpreted in terms of the reaction mechanism,in which a 8Be cluster is transfered from the projectile to the target.Good agreement has been obtained between the cross section for the production of the direct alpha particles and that of the heavy residue 217*Fr which,left in the ground state after evaporation of 2 neutron's,decays into 211At by alpha emission.The experimental energy spectra and angular distributions have been fitted by a semi-classical formula for the differential cross section per unit solid angle and energy interval.
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    [1] H. C. Britt and A. R. Quiton, Phys. Rev., 124 (1961), 877.[2] R. Bimbot, D. Gavdes and M. F. Riret, Nucl. Phys., A189 (1972), 193.[3] Y. Le. Beyee, M. Lefort and M. Sarda, Nucl. Phys., A192 (1972), 405.[4] G. Chenvert et al., Nhcl. Phys., A122 (1968)，481.

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SHEN WEN-GING, XU SHU-WEI, WANG DA-YAN, XIE YUAN-XIANG, GUO ZHONG-YAN and LI ZU-YU. α PARTICLES EMITTED IN THE REACTION OF 12C ON 209Bi[J]. Chinese Physics C, 1977, 1(1): 70-78.
SHEN WEN-GING, XU SHU-WEI, WANG DA-YAN, XIE YUAN-XIANG, GUO ZHONG-YAN and LI ZU-YU. α PARTICLES EMITTED IN THE REACTION OF 12C ON 209Bi[J]. Chinese Physics C, 1977, 1(1): 70-78. shu
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Received: 1977-08-03
Revised: 1900-01-01
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α PARTICLES EMITTED IN THE REACTION OF 12C ON 209Bi

  • Received Date: 1977-08-03
  • Accepted Date: 1900-01-01
  • Available Online: 1977-11-05

Abstract: The energy spectra and angular distributions of alpha particles emitted in the reaction of 12C on 209Bi in the energy range 61.1—73.0 MeV were observed.The △E— E detector system was used to separate alpha particles and other particles emitted in this reaction.The results can be interpreted in terms of the reaction mechanism,in which a 8Be cluster is transfered from the projectile to the target.Good agreement has been obtained between the cross section for the production of the direct alpha particles and that of the heavy residue 217*Fr which,left in the ground state after evaporation of 2 neutron's,decays into 211At by alpha emission.The experimental energy spectra and angular distributions have been fitted by a semi-classical formula for the differential cross section per unit solid angle and energy interval.

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