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SUMMARY:Effect of double spin-orbit parameters on fusion barrier of prolat
 e-prolate deformed nuclei
DTSTART;VALUE=DATE-TIME:20220713T081000Z
DTEND;VALUE=DATE-TIME:20220713T083000Z
DTSTAMP;VALUE=DATE-TIME:20260608T111828Z
UID:indico-contribution-510@events.sinp.msu.ru
DESCRIPTION:Speakers: Rajni Mittal (Department of Physics\, SVNIT Surat Gu
 jarat)\nRelativistic mean-field model (RMF) and Skyrme Hartree fock (SHF) 
 approach with effective energy functionals are applied to describe the bul
 k properties of nuclei. However\, SHF model with standard parametrization 
 fails to address the charge isotope shifts in the vicinity of major shell 
 closures [1]\, which on the other hand is well described by the RMF model 
 calculations [2]. This contrariety is related to the peculiarity of the sp
 in-orbit (S-O) interaction potential (VJ) and hence corresponding modifica
 tions are required in SHF functional. In view of this\, a simple generaliz
 ation of the Skyrme functional is considered with a larger flexibility wit
 hin the spin-orbit term by means of an additional coefficient W0` term alo
 ng with W0. Subsequently\, six parameterizations of the Skyrme functional 
 such as SkIx (x=1 to 5) [3] and SAMi [4] are obtained. In the present work
 \, out of six forces\, four different parameter sets are chosen such as SA
 Mi (W0=137\; W0` =42)\, SkI4 (W0=183.09\; W0` = -180.35)\, SkI3 (W0=94.25\
 ; W0`=0) and SkI2 (W0=60.301\; W0` =60.301) and their effect in terms of d
 ouble spin-orbit strength is examined in the fusion dynamics of 90Zr+90-96
 Zr reactions. The explicit dependence of deformation effect is incorporate
 d by taking prolate-prolate target-projectile combinations. The study is c
 arried out within the framework of Skyrme energy density formalism (SEDF) 
 [5] by calculating the change in fusion barrier height (ΔVB=VB (with VJ)-
 VB (without VJ)) of considered reactions. It is observed that independent 
 of the reaction channel\, maximum decrease in the fusion barrier height is
  obtained with SAMi force (having greater influence of S-O term) followed 
 by SkI4\, SkI3 and minimum with SkI2 Skyrme force. Moreover\, the effect o
 f target deformation is such that the value of ΔVB is maximum for 90Zr+96
 Zr reaction having strong deformation dependence (β2P=0.035\; β2T=0.217)
  and minimum for weakly deformed combination i.e.\, for 90Zr+90Zr channel 
 (β2P=0.035\; β2T=0.035). This means that the double spin-orbit parameter
 s of the spin-orbit strength along with deformations of interacting nuclei
  significantly affect the fusion barrier height of considered reactions. I
 n further study the relative influence of these Skyrme forces will be anal
 ysed on fusion excitation functions and the results will be presented duri
 ng the conference. \nDr Rajni gratefully acknowledges the financial suppor
 t from the CSIR\, New Delhi\, India (file no. 09/1007(13391)/2022-EMR-I).\
 n1.	N. Tajima\, P. Bonche\, H. Flocard\, P.-H. Heenen\, and M.S. Weiss\, N
 ucl. Phys. A 551\, 434 (1993).\n2.	M. M. Sharma\, M. A. Nagarajan\, and E.
  Ring\, Phys. Lett. B 312\, 209 (1993).\n3.	P.-G. Reinhard and H. Flocard\
 , Nucl. Phys. A 584\, 467-488 (1995).\n4.	X. Rocka-Maza\, G. Colo\, and H.
  Sagawa\, Phys. Rev. C 86\, 031306 (R) (2012).\n5.	Rajni\, D. Jain\, I. Sh
 arma\, and M. K. Sharma\, Eur. Phys. J A 53\, 208 (2017).\n\nhttps://event
 s.sinp.msu.ru/event/8/contributions/510/
LOCATION:
URL:https://events.sinp.msu.ru/event/8/contributions/510/
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