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Exploring breakup coupling effect in \(^{7}\)Li+\(^{92,100}\)Mo elastic scattering around Coulomb barrier energies

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Abstract

Elastic scattering angular distributions have been measured for \(^{7}\)Li+\(^{92,100}\)Mo systems in the bombarding energy range of 0.85 to almost two times the Coulomb barrier. The measured elastic scattering angular distributions are fitted using optical model to investigate energy dependence of the real and imaginary strength parameters with phenomenological Woods-Saxon and double folding S\({\tilde{a}}\)o Paulo potentials. Both interaction potential models simulate similar patterns to energy dependence sustaining the same consequence of breakup threshold anomaly. The results of Continuum Discretized Coupled Channels (CDCC) Calculations with inclusion of the breakup coupling of the projectile compares experimental elastic scattering angular distribution better for the \(^{7}\)Li+\(^{92,100}\)Mo systems rather than excluding breakup coupling. A systematic behaviour of total reaction cross section on target and projectile dependency has been investigated by including a wide range of target mass and tightly to weakly bound projectiles. A comparative study on obtained breakup and reaction cross sections has also been carried out for \(^{7}\)Li+\(^{92,100}\)Mo systems.

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Data Availability Statement

This manuscript has associated data in a data repository. [Authors’ comment: The potential behavior of \(^7\mathrm{Li}+^{92,100}\) systems indicates the presence of breakup threshold anomaly around the Coulomb barrier. In light and middle mass range no consistent behavior of Threshold Behavior or Breakup Threshold Behavior is concluded. In heavy mass range no such discrepancy has been reported yet.]

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Acknowledgements

The authors are grateful to Inter University Accelerator Centre (IUAC), New Delhi for financial support and Pelletron crew for excellent delivery of the beam. C. Joshi would like to acknowledge Department of Science and Technology (DST), Government of India for awarding Inspire Fellowship (IF160959) as financial support. D. Patel would like to acknowledge the financial support received from the Department of Science and Technology, India through the SERB-National Post Doctoral Fellowship (N-PDF) scheme.

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Authors and Affiliations

  1. Department of Physics, The M.S. University of Baroda, Vadodara, 390002, India

    C. Joshi, R. K. Singh, N. L. Singh & J. Acharya

  2. Nuclear Physics Division, BARC, Mumbai, 400085, India

    H. Kumawat

  3. Department of Physics, Sardar Vallabhbhai National Institute of Technology, Surat, 395007, India

    D. Patel

  4. Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India

    B. K. Nayak

  5. Department of Physics, University of Delhi, New Delhi, 110007, India

    A. Parihari

  6. Department of Physics, Panjab University, Chandigarh, 160014, India

    K. Rani

  7. Department of Physics, Aligarh Muslim University, Aligarh, 202001, India

    S. D. Sharma

  8. Inter University Accelerator Center, New Delhi, 110067, India

    G. Kaur, I. Ahmed, K. S. Golda, N. Saneesh, M. Kumar, A. Jhingan & P. Sugathan

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  1. C. Joshi
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Joshi, C., Kumawat, H., Singh, R.K. et al. Exploring breakup coupling effect in \(^{7}\)Li+\(^{92,100}\)Mo elastic scattering around Coulomb barrier energies. Eur. Phys. J. A 58, 40 (2022). https://doi.org/10.1140/epja/s10050-022-00690-1

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