Band structures and intruder<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>π</mml:mi><mml:msub><mml:mi>i</mml:mi><mml:mrow><mml:mn>13</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>state in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>197</mml:mn></mml:msup></mml:math>Tl

Pai, H.; Mukherjee, G.; Bhattacharya, Subhashish; Bhattacharya, C.; Bhattacharyya, S.; Bhattacharjee, T.; Chanda, S.; Rajbanshi, S.; Goswami, A.; Gohil, M.; Kundu, S.; Ghosh, T. K.; Banerjee, K.; Rana, T. K.; Pandey, R.; Prajapati, G. K.; Banerjee, S. R.; Mukhopadhyay, S.; Pandit, Deepak; Pal, Surajit; Meena, Jitendra Kumar; Mukhopadhyay, Pamela; Choudhury, A.

doi:10.1103/physrevc.88.064302

Cited by 8 publications

(10 citation statements)

References 28 publications

(59 reference statements)

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“…The PDCO value, obtained in this work also agrees to that in Ref. [13]. Therefore, the E 1 nature of the 957-keV γ ray and thereby, the 13/2 + assignment of the 1953-keV level in 197 Tl has been confirmed.…”

Section: A Level Structure Asupporting

confidence: 90%

“…The spin and parity of the level at 1953 keV was assigned as 13/2 + in the previous work [13]. This was based on the proposed E 1 nature of the 957-keV γ ray.…”

Section: A Level Structure Amentioning

confidence: 99%

“…These orbitals are the so called intruder orbitals, which play important roles to break the spherical symmetry and induce deformations (both prolate and oblate) in a nucleus. Consequently, rotational bands based on the π h 9/2 and the π i 13/2 orbitals have been observed in the neutron deficient odd-A Tl nuclei [4][5][6][7][8][9][10][11][12][13][14][15][16][17] from neutron number N = 101 up to the neutron number as close as N = 120 to the N = 126 spherical shell closure.…”

Section: Introductionmentioning

confidence: 98%

“…The high spin states in 197 Tl nucleus are known mostly from the 4 He and 3 He induced fusion evaporation reactions [12,13,27]. In these studies, two rotational bands, based on a one-quasiparticle (1-qp) and a 3-qp configuration have been reported.…”

Section: Introductionmentioning

confidence: 99%

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Effect of neutron alignments on the structure of Tl197

et al. 2019

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The excited states of 197 Tl have been studied via 197 Au( 4 He, 4n) 197 Tl reaction at a beam energy of 50 MeV from the K-130 cyclotron at the Variable Energy Cyclotron Centre (VECC). The γ rays were detected using the VECC array for Nuclear Spectroscopy (VENUS) with six Compton-suppressed clover HPGe detectors. An improved level scheme of 197 Tl has been proposed from this work, which has been extended to 5.1 MeV of excitation energy and 39/2 h of spin from the placement of 28 new γ -ray transitions. Band crossings in the known one-and three-quasiparticle (qp) bands have been identified for the first time in this work. Two new bands, based on 3-qp and 5-qp configurations, have been observed for the first time in this nucleus; both of which are identified as the magnetic rotational (MR) in nature. The excitation energies of these bands are similar to that of the doubly degenerate bands observed for the similar 3-qp and 5-qp configurations in 195 Tl. These indicate a transition from an aplanar geometry of the neutron, proton, and the core angular momentum vectors to a planar one for neutron number N 116 in Tl isotopes. The total Routhian surface calculations suggest a change in shape from oblate for the 1-qp configuration to a near-spherical one for the 3-and 5-qp configurations. This is consistent with the observed MR nature of the bands with multi-qp configuration. The MR bands are well reproduced by a model calculations in the frame work of the shears mechanism with the principal axis cranking.

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Section: A Level Structure Asupporting

confidence: 90%

“…The spin and parity of the level at 1953 keV was assigned as 13/2 + in the previous work [13]. This was based on the proposed E 1 nature of the 957-keV γ ray.…”

Section: A Level Structure Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Effect of neutron alignments on the structure of Tl197

et al. 2019

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“…A strongly excited J π = 1 + state at an excitation energy of 3628.2 keV with a strength of B(M 1) ↑ = 1.113(49) µ 2 N is observed. The rest of the observed M 1 excitations in 50 Cr is expected [17] to be generated by spin excitations, mainly from f 7/2 → f 5/2 orbitals like in 52 Cr [35]. We will first concentrate on the 1 + state at 3628.2 keV.…”

Section: A Experimental Resultsmentioning

confidence: 99%

Magnetic dipole excitations ofCr50

Pai¹,

Beck²,

Beller³

et al. 2016

Phys. Rev. C

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The low-lying M 1-strength of the open-shell nucleus 50 Cr has been studied with the method of nuclear resonance fluorescence up to 9.7 MeV, using bremsstrahlung at the superconducting Darmstadt linear electron accelerator S-DALINAC and Compton backscattered photons at the High Intensity γ-ray Source (HIγS) facility between 6 and 9.7 MeV of the initial photon energy. Fifteen 1 + states have been observed between 3.6 and 9.7 MeV. Following our analysis, the lowest 1 + state at 3.6 MeV can be considered as an isovector orbital mode with some spin admixture. The obtained results generally match the estimations and trends typical for the scissors-like mode. Detailed calculations within the Skyrme Quasiparticle Random-Phase-Approximation method and the Large-Scale Shell Model justify our conclusions. The calculated distributions of the orbital current for the lowest 1 + -state suggest the schematic view of Lipparini and Stringari (isovector rotation-like oscillations inside the rigid surface) rather than the scissors-like picture of Lo Iudice and Palumbo. The spin M1 resonance is shown to be mainly generated by spin-flip transitions between the orbitals of the f p-shell.

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Excited Nuclear States for Tl-197 (Thallium)

Sukhoruchkin¹,

Soroko²

2016

Supplement to I/25 a-G

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Band structures and intruderπi13/2state in197Tl

Cited by 8 publications

References 28 publications

Effect of neutron alignments on the structure of Tl197

Effect of neutron alignments on the structure of Tl197

Magnetic dipole excitations ofCr50

Excited Nuclear States for Tl-197 (Thallium)

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