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Ghugre, S. S.; Kharraja, B.; Garg, U.; Janssens, R. V. F.; Carpenter, M. P.; Crowell, B.; Khoo, T. L.; Lauritsen, T.; Nisius, D.; Mueller, W. F.; Reviol, W.; Riedinger, L. L.; Kaczarowski, R.

doi:10.1103/physrevc.58.3243

Cited by 16 publications

(25 citation statements)

References 15 publications

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“…The spectra are generated with double coincidence gate on (a) one γ ray from the list of the 842-, 726-, 994-, 980-, and 549-keV γ rays, and the 1362-keV γ ray, (b) one γ ray from the list of the 842-and 726-keV γ rays, and the other from the list of the 549-and 1136-keV γ rays, and (c) one γ ray from the list of the 842-, 726-, and 994-keV γ rays, and the 980-keV γ ray. modification of the earlier reported level schemes [30,31]. The investigations from the β + and EC radioactive decay spectroscopy of 98 Rh [45] have led to identification of the ground state with T 1/2 = 8.7 min and an isomeric state with T 1/2 = 3.5 min.…”

Section: A Level Scheme Of 98 Rhmentioning

confidence: 90%

“…Low-spin excited states in 98 Rh have been previously investigated from the β + and EC decay of 98 Pd (T 1/2 = 17.7 min) [26,27], and the in-beam light-ion-induced 98 Ru(p,nγ ) [28], 99 Ru(d,3n), and 96 Ru(α,np) [29] reactions. Concurrent γ -ray spectroscopic studies by Ghugre et al [30] and Chattopadhyay et al [31] using the heavy-ion-induced 65 Cu( 36 S,3n) and 70 Ge( 32 S,3pn) reactions have resulted in level scheme of 98 Rh up to high spins ∼20 . These investigations in 98 Rh have been performed using small detector arrays of Compton-suppressed Ge detectors.…”

Section: Introductionmentioning

confidence: 99%

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Band structures in doubly oddRh98

et al. 2014

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Excited states in the transitional doubly odd 98 Rh nucleus were populated in the 75 As( 28 Si,2p3n) fusionevaporation reaction using the 120-MeV incident 28 Si beam. The subsequent de-excitations were investigated through in-beam γ -ray spectroscopic techniques using an early implementation phase of the Indian National Gamma Array (INGA) spectrometer equipped with 18 clover Ge detectors. The level structures in 98 Rh have been established up to excitation energy ≈10 MeV and angular momentum ∼23 . The previously reported level schemes are considerably modified and extended substantially. Significant expansion of the level scheme at low excitation energies stipulates that the previously reported 842-726-994-980-265 keV γ -transition cascade in 98 Rh is not directly based on the ground state (T 1/2 = 8.7 min). Tilted-axis cranking (TAC) shell-model calculations have been used to put the present level scheme of 98 Rh in perspective. Level structures have been interpreted in terms of the rotational bands based on the πp 1/2 ⊗ νh 11/2 [triaxiality parameter (γ ) = 25 • ], and πf 5/2 ⊗ νh 11/2 proton-neutron configurations having moderate quadrupole deformation ( 2 ≈ 0.13) and the admixtures. Excited band structures are based on the πp 1/2 /f 5/2 ⊗ π (g 9/2 ) 2 ⊗ νh 11/2 configuration and the fully stretched [πp 1/2 ⊗ ν(h 11/2 ) 2 ⊗ νd 5/2 ] 13 − configuration.

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Section: A Level Scheme Of 98 Rhmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Band structures in doubly oddRh98

et al. 2014

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“…Chattopadhyay et al reported a coupled band with intense dipole transitions B(M1)/B(E2) ≥ 4 (μ n /eb) 2 with negative parity and interpreted it as to be based on πg 9/2 ⊗νh 11/2 configuration. This sequence comprising E2 transitions of energies 1230, 1311 and 1485 keV and the 681, 455, 856 and 506 keV M1 transitions has been reported by Chattopadhyay et al [11]; which is not supported careful search by Ghugre et al [12].…”

Section: The 98 Rh Nucleusmentioning

confidence: 58%

“…In the previous investigation in 98 Rh, considerably different level schemes have been reported in contemporaneous investigations in 98 Rh by Chattopadhyay et al [11] and Ghugre et al [12] using 65 Cu( 36 S, 3n) and 70 Ge( 32 S, 3pn) reactions, respectively. The parity assignments for the structures above the 8 + level are reversed by the two groups, which were based on the 1409 keV transition assigned as E1 and E2, respectively, inferred from different DCO measured values.…”

Section: The 98 Rh Nucleusmentioning

confidence: 91%

“…Limited level scheme of 99 Pd with the highest observed state at excitation energy ∼ 4 MeV and spin ∼ 14h was reported from these investigations. In case of 98 Rh, considerably different level schemes have been reported in contemporaneous investigations in 98 Rh by Chattopadhyay et al, [11] and Ghugre et al [12] using 65 Cu( 36 S, 3n) and 70 Ge( 32 S, 3pn) reactions, respectively. In case of 99 Rh, previous studies [13] are based on 66 Zn( 37 Cl, 2p2n) reaction and resulted in a level scheme up to 25h and excitation energy of ∼ 8 MeV through γ-ray spectroscopy using 5 Ge detector array.…”

Section: Introductionmentioning

confidence: 98%

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Nuclear structure studies close to N = Z = 50

Kumar¹,

Sihotra²,

Naik³

et al. 2014

AIP Conference Proceedings

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Abstract. The level structures in 98,99 Rh, and 99 Pd nuclei have been investigated through in beam γ-ray spectroscopic techniques following the 75 As( 28 Si, xpyn) fusion-evaporation reaction at E lab =120 MeV. These investigations were carried out using Indian-National-Gamma-Array (INGA) consisting of Compton-suppressed clover detectors at the Inter-University Accelerator Centre, New Delhi. The level structures observed in 99 Pd, and 98,99 Rh have been established up to ∼11 MeV, 10 MeV and 16 MeV excitation energy and spin∼ 23h, 23h, and 28h respectively. In the doubly-odd 98 Rh nucleus, new band structures and isomeric states have been identified at lower spins and new states below the previously identified 2 + ground state (T 1/2 = 8.5 m) are identified. In the present work 99 Rh structure have been observed similar to 101 Rh which is based on p 1/2 and g 9/2 orbitals. Various positive and negative parity states in these nuclei are observed to be energetically more favored with respect to the neighboring ones, and are likely to be the maximally aligned states obtained by angular momentum coupling of the valence particles (holes). The level structures observed in 99 Pd have been interpreted in the framework of a microscopic theory based on the deformed Hartree-Fock (HF) and angular momentum projection techniques. Band structures at low excitation energy are based on the low-Ω νg 7/2 and νd 5/2 orbitals, have been observed in 99 Pd. Band structure at higher spins are reproduced with the ν(g 7/2 ) 2 ⊗ ν(g 9/2 ) −1 ⊗ ν(h 11/2 ) 2 ⊗ π(g 9/2 ) 6 configurations. Observation of new E1 transitions linking the opposite parity νh 11/2 and νd 5/2 bands provide fingerprints of possible octupole correlations in 99 Pd.The extracted values of the B(E1)/B(E2) ratios for the lower levels in the νh 11/2 band are ∼ 10 −7 [fm] −2 .

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