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Spin-parity measurements in the neutron-rich N ∼ 20 34P and 36S nuclei

  • Krishichayan
  • A. Chakraborty
  • S. Mukhopadhyay
  • S. Ray
  • N. S. Pattabiraman
  • S. S. Ghugre
  • R. Goswami
  • A. K. Sinha
  • S. Sarkar
  • U. Garg
  • P. V. Madhusudhana Rao
  • S. K. Basu
  • B. K. Yogi
  • L. Chaturvedi
  • A. Dhal
  • R. K. Sinha
  • M. Saha Sarkar
  • S. Saha
  • R. Singh
  • R. K. Bhowmik
  • A. Jhingan
  • N. Madhavan
  • S. Muralithar
  • S. Nath
  • R. P. Singh
  • P. Sugathan
Nuclear Structure and Reactions

Abstract.

Yrast and near-yrast energy levels in the neutron-rich N ∼ 20 nuclei 34P, 36S were populated using transfer/deep-inelastic processes following the 34S + 115In reaction at an incident energy of 140MeV. The use of a multi-clover array has facilitated polarization measurements of the observed γ-rays and necessitated some changes in the previously known level scheme. The observation of the negative-parity levels in these nuclei on the periphery of the “island of inversion” is indicative of the influence of the intruder orbitals on the level structure at low spins. Shell-model calculations indicate that the inclusion of the orbitals from the upper pf shell is important even for the low-lying positive-parity states.

PACS.

23.20.Lv Gamma transitions and level energies 23.20.En Angular distribution and correlation measurements 21.60.Cs Shell model 27.30.+t 20 ⩽ A ⩽ 38 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2006

Authors and Affiliations

  • Krishichayan
    • 1
  • A. Chakraborty
    • 1
  • S. Mukhopadhyay
    • 1
  • S. Ray
    • 1
  • N. S. Pattabiraman
    • 1
  • S. S. Ghugre
    • 1
  • R. Goswami
    • 1
  • A. K. Sinha
    • 1
  • S. Sarkar
    • 2
  • U. Garg
    • 3
  • P. V. Madhusudhana Rao
    • 3
  • S. K. Basu
    • 4
  • B. K. Yogi
    • 5
  • L. Chaturvedi
    • 6
  • A. Dhal
    • 6
  • R. K. Sinha
    • 6
  • M. Saha Sarkar
    • 7
  • S. Saha
    • 7
  • R. Singh
    • 8
  • R. K. Bhowmik
    • 9
  • A. Jhingan
    • 9
  • N. Madhavan
    • 9
  • S. Muralithar
    • 9
  • S. Nath
    • 9
  • R. P. Singh
    • 9
  • P. Sugathan
    • 9
  1. 1.UGC-DAE Consortium for Scientific ResearchKolkata Centre, Sector III/LB-8, Bidhan NagarKolkataIndia
  2. 2.Department of PhysicsThe University of BurdwanBurdwanIndia
  3. 3.Department of PhysicsUniversity of Notre DameNotre DameUSA
  4. 4.Variable Energy Cyclotron Centre, Sector-I/AF, Bidhan NagarKolkataIndia
  5. 5.Department of PhysicsGovt. CollegeKotaIndia
  6. 6.Department of PhysicsBanaras Hindu UniversityVaranasiIndia
  7. 7.Saha Institute of Nuclear PhysicsKolkataIndia
  8. 8.Department of Physics and AstrophysicsUniversity of DelhiNew DelhiIndia
  9. 9.Nuclear Science CentreAruna Asaf Ali MargNew DelhiIndia

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