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Электронный каталог: Ashna, B. - Fission and Quasifission Studies in the *3*0Si+*1*9*7Au Reaction
Ashna, B. - Fission and Quasifission Studies in the *3*0Si+*1*9*7Au Reaction
Статья
Автор: Ashna, B.
Physical Review C: Fission and Quasifission Studies in the *3*0Si+*1*9*7Au Reaction
б.г.
ISBN отсутствует
Автор: Ashna, B.
Physical Review C: Fission and Quasifission Studies in the *3*0Si+*1*9*7Au Reaction
б.г.
ISBN отсутствует
На полку
Статья
Ashna, B.
Fission and Quasifission Studies in the *3*0Si+*1*9*7Au Reaction / B.Ashna, A.K.Nasirov, [a.o.]. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 3. – P. 034606. – URL: https://doi.org/10.1103/js52-tnp5. – Bibliogr.:.
Background: Quasifission substantially hinders the formation of the compound nucleus in heavy ion fusion reactions. It poses a major obstacle to superheavy element formation. This process has a strong entrance channel dependence. Purpose: To study the interplay between fission and quasifission in *3*0Si+*1*9*7Au reaction at energies around the Coulomb barrier. Methods: Binary fragments from *3*0Si+*1*9*7Au reaction were measured in coincidence using a pair of large area multiwire proportional counters. The mass-ratio and mass angle distributions of the fragments were obtained using the kinematic re-construction method. Experimental results are interpreted using different theoretical methods. Further, the results of present reaction have been compared with that of *2*8Si+*1*9*7Au reaction available in literature. Results: Broadened mass ratio distributions have been observed in the range of energy studied compared to the theoretical calculations assuming compound nucleus formation. No mass angle correlation is observed. Fission fragment mass distribution of the present reaction is compared with that of other neptunium isotopes at low excitation energies. A fast transition from asymmetric fission to symmetric fission is observed with decrease of 𝑁/𝑍 along the isotopic chain of neptunium. The difference between the asymmetric and symmetric fission barrier is higher for the *2*3*8Np at all temperatures, compared to &sup(225,227)Np resulting in asymmetric mass division in the fission of *2*3*8Np and symmetric split at low excitation energies in &sup(225,227)Np . Calculated quasifission yields in the mass range 80≤𝐴≤150 show significant dependence on collision energy for both &sup(28,30)Si+*1*9*7Au reactions. Conclusions: Measured fragment mass distribution has significant contribution from slow quasifission in *3*0Si+*1*9*7Au reaction. 40–60% fusion probability is obtained for the &sup(28,30)Si+*1*9*7Au reactions. Quasifission yields show strong dependence on energy and angular momentum.
ОИЯИ = ОИЯИ (JINR)2026
Ashna, B.
Fission and Quasifission Studies in the *3*0Si+*1*9*7Au Reaction / B.Ashna, A.K.Nasirov, [a.o.]. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 3. – P. 034606. – URL: https://doi.org/10.1103/js52-tnp5. – Bibliogr.:.
Background: Quasifission substantially hinders the formation of the compound nucleus in heavy ion fusion reactions. It poses a major obstacle to superheavy element formation. This process has a strong entrance channel dependence. Purpose: To study the interplay between fission and quasifission in *3*0Si+*1*9*7Au reaction at energies around the Coulomb barrier. Methods: Binary fragments from *3*0Si+*1*9*7Au reaction were measured in coincidence using a pair of large area multiwire proportional counters. The mass-ratio and mass angle distributions of the fragments were obtained using the kinematic re-construction method. Experimental results are interpreted using different theoretical methods. Further, the results of present reaction have been compared with that of *2*8Si+*1*9*7Au reaction available in literature. Results: Broadened mass ratio distributions have been observed in the range of energy studied compared to the theoretical calculations assuming compound nucleus formation. No mass angle correlation is observed. Fission fragment mass distribution of the present reaction is compared with that of other neptunium isotopes at low excitation energies. A fast transition from asymmetric fission to symmetric fission is observed with decrease of 𝑁/𝑍 along the isotopic chain of neptunium. The difference between the asymmetric and symmetric fission barrier is higher for the *2*3*8Np at all temperatures, compared to &sup(225,227)Np resulting in asymmetric mass division in the fission of *2*3*8Np and symmetric split at low excitation energies in &sup(225,227)Np . Calculated quasifission yields in the mass range 80≤𝐴≤150 show significant dependence on collision energy for both &sup(28,30)Si+*1*9*7Au reactions. Conclusions: Measured fragment mass distribution has significant contribution from slow quasifission in *3*0Si+*1*9*7Au reaction. 40–60% fusion probability is obtained for the &sup(28,30)Si+*1*9*7Au reactions. Quasifission yields show strong dependence on energy and angular momentum.
ОИЯИ = ОИЯИ (JINR)2026
