Article

Structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:msub><mml:mi>Te</mml:mi><mml:mn>80</mml:mn></mml:msub><mml:mprescripts/><mml:mn>52</mml:mn><mml:mn>132</mml:mn></mml:mmultiscripts></mml:math>: The two-particle and two-hole spectrum of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:msub><mml:mi>Sn</mml:mi><mml:mn>82</mml:mn></mml:msub><mml:mprescripts/><mml:mn>50</mml:mn><mml:mn>132</mml:mn></mml:mmultiscripts></mml:math>

S. BiswasDepartment of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, IndiaR. PalitDepartment of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, IndiaA. NavinGANIL, CEA/DRF - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, FranceM. RejmundGANIL, CEA/DRF - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, FranceAbhijit BisoiIndian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, IndiaM. Saha SarkarSaha Institute of Nuclear Physics, I/AF Bidhan Nagar, Kolkata 700064, IndiaS. SarkarIndian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, IndiaS. BhattacharyyaVariable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700064, IndiaD. C. BiswasBhabha Atomic Research Centre, Mumbai 400085, IndiaM. CaamañoUSC, Universidad de Santiago de Compostela, E-15706 Santiago de Compostela, SpainM. P. CarpenterArgonne National Laboratory, Argonne, Illinois 60439, USAD. ChoudhuryDepartment of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, IndiaE. ClémentGANIL, CEA/DRF - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, FranceL. S. DanuBhabha Atomic Research Centre, Mumbai 400085, IndiaO. DelauneLaboratoire National Henri BecquerelF. FargetGANIL, CEA/DRF - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, FranceG. de FranceGANIL, CEA/DRF - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, FranceS. S. HotaAustralian National University, Canberra ACT2601, AustraliaB. JacquotGANIL, CEA/DRF - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, FranceA. LemassonGANIL, CEA/DRF - CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, FranceS. MukhopadhyayBhabha Atomic Research Centre, Mumbai 400085, IndiaV. NanalDepartment of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, IndiaR. G. PillayDepartment of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, IndiaS. SahaDepartment of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, IndiaJ. SethiDepartment of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, IndiaP. SinghDepartment of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, IndiaP. C. SrivastavaDepartment of Physics, Indian Institute of Technology, Roorkee 247667, IndiaS. K. TandelUM-DAE Centre for Excellence in Basic Sciences, Mumbai 400098, India

2016lv

ABI

Abstract

High-spin states in $^{132}\mathrm{Te}$, an isotope with two proton particles and two neutron holes outside of the $^{132}\mathrm{Sn}$ doubly magic core, have been extended up to an excitation energy of 6.17 MeV. The prompt-delayed coincidence technique has been used to correlate states above the ${T}_{1/2}=3.70(9)\phantom{\rule{4pt}{0ex}}\ensuremath{\mu}\text{s}$ isomer in $^{132}\mathrm{Te}$ to the lower states using $^{232}\mathrm{Th}(^{7}\mathrm{Li},f)$ at 5.4 MeV/u and the Indian National Gamma Array (INGA). With $^{9}\mathrm{Be}(^{238}\mathrm{U},f)$ at 6.2 MeV/u and EXOGAM $\ensuremath{\gamma}$-array coupled with the VAMOS++ spectrometer, the level scheme was extended to higher excitation energies. The high-spin positive-parity states, above ${J}^{\ensuremath{\pi}}={10}^{+}$, in $^{132}\mathrm{Te}$ are expected to arise from the alignment of the particles in the high-$j$ orbitals lying close to the Fermi surface, the $\ensuremath{\pi}{g}_{7/2}^{2}$, and the $\ensuremath{\nu}{h}_{11/2}^{\ensuremath{-}2}$ configurations. The experimental level scheme has been compared with the large scale shell model calculations. A reduction in the $p\text{\ensuremath{-}}n$ interaction strength resulted in an improved agreement with the measurements up to the spin of $15\ensuremath{\hbar}$. In contrast, the comparison of the differences between the experiment and these calculations for the $N=76,78$ isotones of Te and Sn shows the increasing disagreement as a function of spin, where the magnitude is larger in Te than in Sn. This behavior could possibly be attributed to the deficiencies in the $p\text{\ensuremath{-}}n$ correlations, in addition to the $n\text{\ensuremath{-}}n$ correlations in Sn.

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Identifiers

DOI: 10.1103/physrevc.93.034324

Citations and references

Cited by 20 references

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