Various Isomers in Doubly Odd I Isotopes

Moon, C.-B.; Dracoulis, George; Bark, R. A.; Byrne, Aidan; Davidson, Paul; Kibédi, T.; Lane, G. J.; Wilson, A. N.

doi:10.3938/jkps.59.1525

Cited by 15 publications

(23 citation statements)

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“…1 are built on the 11/2 − state. An analogous sequence of E2 transitions built on the 11/2 − state has been observed in the odd-mass iodine isotopes with mass number A from 109 to 127 [5,23,24], and interpreted as decoupled bands originating from the proton h 11/2 orbital. These bands resemble the rotational characters of even-even xenon at low spins for the lighter iodine isotopes.…”

Section: Decoupled Band a Based On The π H 11/2 Configurationmentioning

confidence: 54%

“…These bands resemble the rotational characters of even-even xenon at low spins for the lighter iodine isotopes. Such negative-parity levels follow the same vibrational behaviors as the neighboring even-mass tellurium core states for the heavier isotopes with A > 121 [24]. In fact, the decoupled nature of these bands is inferred from the similar energy level spacings with those of the corresponding even-even cores.…”

Section: Decoupled Band a Based On The π H 11/2 Configurationmentioning

confidence: 60%

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High-spin states in127I

et al. 2012

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In-beam γ spectroscopy of the stable nucleus 127 I has been studied experimentally using the 124 Sn( 7 Li, 4nγ ) 127 I reaction at a beam energy of 32 MeV. The high-spin level scheme of 127 I is extended significantly. Negative-parity levels built on the 11/2 − , πh 11/2 particle state are observed up to (35/2 − ) and described as a decoupled band, extending our knowledge of decoupled structures to the most neutron-rich stable iodine isotope. Two I = 2 yrast positive-parity sequences are proposed to be associated with the πg 7/2 configuration due to observations of several strong interband transitions, and two weakly populated I = 2 positive-parity bands are newly identified and interpreted as arising mainly from the πd 5/2 configuration. Three-quasiparticle configurations are assigned to the I π = 15/2 + and 23/2 + states according to the existing knowledge in neighboring nuclei; irregular noncollective and regular collective excitations built on these two (15/2 + and 23/2 + ) states are observed to coexist at similar energies. The observed three-quasiparticle band structures are further interpreted with the aid of configuration-constrained potential energy surface calculations.

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Section: Decoupled Band a Based On The π H 11/2 Configurationmentioning

confidence: 54%

Section: Decoupled Band a Based On The π H 11/2 Configurationmentioning

confidence: 60%

High-spin states in127I

et al. 2012

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“…In fact, the positive-parity πh 11/2 ⊗ νh 11/2 level structures are commonly encountered in heavier doubly odd cesium, lanthanum, and praseodymium nuclei with mass number A ∼ 130 [17]. Recently, Moon reported the πh 11/2 ⊗ νh 11/2 bands in odd-odd iodine nuclei from 116 I to 126 I, and investigated the systematic features of these bands [2,39]. For the nucleus 128 I, the level structure C could be interpreted as being associated with the πh 11/2 ⊗ νh 11/2 configuration based on the following considerations.…”

Section: Positive-parity Level Structure Cmentioning

confidence: 97%

“…[14] and the corresponding band in Ref. [2]), and different configurations were proposed for the same band even by the same author (see Ref. [20] and band 3 in Fig.…”

Section: Introductionmentioning

confidence: 97%

“…The iodine nuclei lie in the typical transitional Te-I-Xe region where the tellurium (Z = 52) nuclei are known to be the representative vibrator, and the xenon nuclei (Z = 54) represent the triaxial rotator [1,2]. The wide variety of structural features are naturally expected in the iodine isotopes with Z = 53; therefore experimental and theoretical efforts have been devoted to the iodine isotopic series during the past two decades [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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High-spin level scheme of doubly odd128I

et al. 2012

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High-spin states in the odd-odd 128 I have been studied experimentally using the 124 Sn( 7 Li, 3nγ ) 128 I reaction at beam energies of 28 and 32 MeV. A level scheme built on the known T 1/2 = 175 ns, (6 − ) isomer has been established. The low-lying states in the level scheme have been proposed to be associated with the πd 5/2 ⊗ νh 11/2 and πg 7/2 ⊗ νh 11/2 two-quasiparticle excitations. The strongly populated negative-parity states, forming a bandlike structure, have been assigned to be based on the πg 7/2 ⊗ νh 11/2 configuration. The πh 11/2 ⊗ νh 11/2 multiplet 9 + , 10 + , and 11 + members have been identified according to the systematics of the corresponding level structures observed in the lighter odd-odd iodine isotopes. The two-quasiparticle configuration assignments are supported by the nucleon pair approximation and empirical shell-model calculations.

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Excited Nuclear States for I-122 (Iodine)

Sukhoruchkin¹,

Soroko²

2015

Supplement to I/25 a-E

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Various Isomers in Doubly Odd I Isotopes

Cited by 15 publications

References 0 publications

High-spin states in127I

High-spin states in127I

High-spin level scheme of doubly odd128I

Excited Nuclear States for I-122 (Iodine)

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