Role of projectile breakup effects and intrinsic degrees of freedom on fusion dynamics

  • This article analyzed the fusion dynamics of loosely bound and stable projectiles with Zr-target isotopes within the context of the coupled channel approach and the energy-dependent Woods-Saxon potential model(EDWSP model). In the case of the 28Si+90Zr reaction, the coupling to the inelastic surface excitations results in an adequate description of the observed fusion dynamics while in case of the 28Si+94Zr reaction, the coupling to collective surface vibrational states as well as the neutron(multi-neutron) transfer channel is necessary in the coupled channel calculations to reproduce the below-barrier fusion data. However, the EDWSP model calculation provides an accurate explanation of the fusion data of 28Si+90, 94Zr reactions in the domain of the Coulomb barrier. In the fusion of the 6Li+90Zr reaction, the inclusion of the nuclear structure degrees of freedom recovers the observed sub-barrier fusion enhancement but results in suppression of the above barrier fusion data by 34% with respect to the coupled channel calculations. Using EDWSP model calculations, this suppression factor is reduced by 14% and consequently, the above-barrier fusion data of 6Li+90Zr reaction is hindered by 20% with reference to the EDWSP model calculations. Such fusion hindrance at above-barrier energies can be correlated with the breakup of the projectile(6Li) before reaching the fusion barrier, as a consequence of low binding energy.
      PCAS:
  • 加载中
  • [1] C. Beck et al, Phys. Rev. C, 67:054602(2003)
    [2] C. Beck, Journal of Physics:Confernece Series, 420:012067(2013)
    [3] M. S. Gautam, Phys. Scr., 90:025301(2015)
    [4] J. R. Bierman et al, Phys. Rev. Lett., 76:1587(1996)
    [5] L. F. Canto et al, Phys. Rep., 424:1(2006)
    [6] B. B. Back et al, Rev. Mod. Phys., 86:317(2014)
    [7] M. S. Gautam, Nucl. Phys. A, 933:272(2015)
    [8] L. T. Baby et al, Phys. Rev. C, 62:014603(2000)
    [9] A. A. Sonzogni et al, Phys. Rev. C, 57:722(1998)
    [10] A. M. Vinodkumar et al, Phys. Rev. C, 53:803(1996)
    [11] N. V. S. V. Prasad et al, Nucl. Phys. A, 603:176(1996)
    [12] A M Stefanini et al, Phys. Lett. B, 728:639(2014)
    [13] M. S. Gautam, Phys. Scr., 90:055301(2015), Phys. Scr., 90:125301(2015)
    [14] Y. W. Wu et al, Phys. Rev. C, 68:044605(2003)
    [15] Z.H. Liu et al, Eur. Phys. J. A, 26:73(2005)
    [16] M. S. Hussein et al, Phys. Rev. C, 46:377(1992)
    [17] M. S. Hussein et al, Phys. Rev. C, 51:846(1995)
    [18] M. S. Gautam, Can. J. Phys., 93:1343(2015); Chinese Phys. C, 39:114102(2015); Indiam J. Phys., 90:335(2016); Braz. J. Phys., 46:143(216)
    [19] C. H. Dasso et al, Phys. Rev. C, 50:(1994) R12
    [20] C. H. Dasso et al, Phys. Lett. B, 276:1(1992)
    [21] K. E. Zyromski et al, Phys. Rev. C, 55:R562(1997)
    [22] P. A. DeYong et al, Phys. Rev. C, 58:3442(1998)
    [23] J. J. Kolata et al, Phys. Rev. Lett., 81:4580(1998)
    [24] M. Trotta et al, Phys. Rev. Lett., 84:2342(2000)
    [25] M. Dasgupta et al, Phys. Rev. Lett., 82:1395(1999)
    [26] C. Signorini et al, Eur. Phys. J. A, 5:7(1999)
    [27] M. Dasgupta et al, Phys. Rev. C, 66:041602(R)(2002)
    [28] P. K. Rath et al, Phys. Rev. C, 79:051601(2009)
    [29] V. Tripathi et al, Phys. Rev. Lett., 88:172701(2002)
    [30] H. Kumawat et al., Phys. Rev. C, 86:024607(2012)
    [31] I. J. Thompson, Com. Phys. Report, 7:167(1988)
    [32] A. Diaz-Torres and I. J. Thompson, Phys. Rev. C, 65:024606(2002)
    [33] M. Singh, Sukhvinder and R. Kharab, Nucl. Phys. A, 897:179(2013), Nucl. Phys. A, 897:198(2013); Mod. Phys. Lett. A, 26:2129(2011)
    [34] M. S. Gautam, Phys. Rev. C, 90:024620(2014); M. S. Gautam et al, Phys. Rev. C, 92:054605(2015); Braz. J. Phys. 46:133(2016)
    [35] K. Hagino, N. Rowley and A. T. Kruppa, Comput. Phys. Commun, 123:143(1999)
    [36] S. Kalkal et al, Phys. Rev. C, 81:044610(2010)
    [37] S. Kalkal et al, Phys. Rev. C, 83:054607(2011)
    [38] S. Kalkal et al, Phys. Rev. C, 85:034606(2012)
    [39] M. S. Gautam, Mod. Phys. Lett. A, 30:1550013(2015)
    [40] M. S. Gautam, Acta. Phys. Pol. B, 46:1055(2015)
    [41] C. Y. Wong, Phys. Rev. Lett., 31:766(1973)
    [42] D. L. Hill and J. A. Wheeler, Phys. Rev., 89:1102(1953)
    [43] L. C. Chamon et al., Phys. Rev. C, 66:014610(2002)
    [44] K. Washiyama and D. Lacroix, Phys. Rev. C, 74:024610(2008)
    [45] K. Hagino and N. Takigawa, Prog. Theor. Phys., 128:1061(2012)
    [46] E. F. Aguilera and J. J. Kolata, Phys. Rev. C, 85:014603(2012)
    [47] C. Signorini et al, Phys. Rev. C, 67:044607(2003)
  • 加载中

Get Citation
Manjeet Singh Gautam. Role of projectile breakup effects and intrinsic degrees of freedom on fusion dynamics[J]. Chinese Physics C, 2016, 40(5): 054101. doi: 10.1088/1674-1137/40/5/054101
Manjeet Singh Gautam. Role of projectile breakup effects and intrinsic degrees of freedom on fusion dynamics[J]. Chinese Physics C, 2016, 40(5): 054101.  doi: 10.1088/1674-1137/40/5/054101 shu
Milestone
Received: 2015-07-09
Fund

    Supported by Dr. D. S. Kothari Post-Doctoral Fellowship Scheme sponsored by University Grants Commission(UGC), New Delhi, India

Article Metric

Article Views(907)
PDF Downloads(17)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Role of projectile breakup effects and intrinsic degrees of freedom on fusion dynamics

    Corresponding author: Manjeet Singh Gautam,
  • 1. Department of Physics, Indus Degree College, Kinana, Jind-126102(Hargana), India
Fund Project:  Supported by Dr. D. S. Kothari Post-Doctoral Fellowship Scheme sponsored by University Grants Commission(UGC), New Delhi, India

Abstract: This article analyzed the fusion dynamics of loosely bound and stable projectiles with Zr-target isotopes within the context of the coupled channel approach and the energy-dependent Woods-Saxon potential model(EDWSP model). In the case of the 28Si+90Zr reaction, the coupling to the inelastic surface excitations results in an adequate description of the observed fusion dynamics while in case of the 28Si+94Zr reaction, the coupling to collective surface vibrational states as well as the neutron(multi-neutron) transfer channel is necessary in the coupled channel calculations to reproduce the below-barrier fusion data. However, the EDWSP model calculation provides an accurate explanation of the fusion data of 28Si+90, 94Zr reactions in the domain of the Coulomb barrier. In the fusion of the 6Li+90Zr reaction, the inclusion of the nuclear structure degrees of freedom recovers the observed sub-barrier fusion enhancement but results in suppression of the above barrier fusion data by 34% with respect to the coupled channel calculations. Using EDWSP model calculations, this suppression factor is reduced by 14% and consequently, the above-barrier fusion data of 6Li+90Zr reaction is hindered by 20% with reference to the EDWSP model calculations. Such fusion hindrance at above-barrier energies can be correlated with the breakup of the projectile(6Li) before reaching the fusion barrier, as a consequence of low binding energy.

    HTML

Reference (47)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return