Quadrupole moments and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>g</mml:mi></mml:mrow></mml:math>factors for high-spin neutron isomers in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">Pb</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>193</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>

Ionescu‐Bujor, M.; Iordăchescu, A.; Balabanski, D. L.; Chmel, S.; Neyens, G.; Baldsiefen, G.; Bazzacco, D.; Brandolini, F.; Bucurescu, D.; Danchev, M.; Poli, M.; Георгиев, Г.; Görgen, A.; Haas, H.; Hübel, H.; Ilie, G.; Mărginean, N.; Menegazzo, R.; Pavan, P.; Rainovski, G.; Ribas, R. V.; Alvarez, C. Rossi; Ur, C. A.; Vyvey, Katrien; Frauendorf, S.

doi:10.1103/physrevc.70.034305

Cited by 14 publications

(7 citation statements)

References 35 publications

(57 reference statements)

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“…Further details about the calculations of the spectroscopic quadrupole moments of the light Pb isotopes within the framework of PQTAC are presented in Refs. [15][16][17].…”

Section: Pqtac Calculations and Resultsmentioning

confidence: 98%

“…No experimental data exist for the 16 − shears bandheads. However, recently the quadrupole moment of the 29/2 − shears state in 193 Pb was measured [17], The calculated deformation parameters ε 2 and γ are given in Tables III and IV, respectively. The quadrupole deformations are small, typically lying around ε 2 = −0.1, and remain almost constant within the bands.…”

Section: Pqtac Calculations and Resultsmentioning

confidence: 99%

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Deformation parameters and transition probabilities for shears bands in Pb isotopes

2007

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Tilt angles, deformation parameters, angular momenta, and reduced magnetic dipole and electric quadrupole transition probabilities are calculated within the framework of the tilted-axis cranking model for shears bands in the neutron-deficient Pb isotopes 193 Pb to 202 Pb. The self-consistently calculated quadrupole-deformation parameters for the various configurations lie around ε 2 = −0.1, and the triaxiality is small. The tilt angle, i.e., the angle between the angular momentum and the nuclear symmetry axis, remains almost constant within each band, showing only a small increase toward higher angular momenta. The angular momentum increases mainly due to the shears effect, which is a step-by-step alignment of high-j proton and neutron orbitals into the direction of the total angular momentum. Calculated and experimental M1 transition rates are in good agreement. They decrease with increasing spin within the bands as expected for the shears effect. The calculated B(E2) values show only a weak spin dependence. However, the experimental B(E2) values have large errors, and more accurate data are needed to decide between the present model and a recently suggested geometrical approach.

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“…Further details about the calculations of the spectroscopic quadrupole moments of the light Pb isotopes within the framework of PQTAC are presented in Refs. [15][16][17].…”

Section: Pqtac Calculations and Resultsmentioning

confidence: 98%

Section: Pqtac Calculations and Resultsmentioning

confidence: 99%

Deformation parameters and transition probabilities for shears bands in Pb isotopes

2007

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“…Small quadrupole moments were recently measured for the 21/2 − and 33/2 + states, described by three-quasineutron configurations [16,20]. Similarly, the QI pattern of the 25/2 − → 21/2…”

Section: Experimental Procedures and Resultsmentioning

confidence: 99%

“…2. In addition to the previously reported 9.4-, 180-, and 20.5-ns isomers [13,20], another isomer was established, the 27/2 − (2322 + x) keV level in 193 Pb, as shown in Fig. 2.…”

Section: Experimental Procedures and Resultsmentioning

confidence: 99%

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Spin, quadrupole moment, and deformation of the magnetic-rotational band head inPb193

Balabanski

Ionescu‐Bujor²,

Iordăchescu³

et al. 2011

Phys. Rev. C

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The spectroscopic quadrupole moment of the T 1/2 = 9.4(5) ns isomer in 193 Pb at an excitation energy E ex = (2585 + x) keV is measured by the time-differential perturbed angular distribution method as |Q s | = 2.6(3) e b. Spin and parity I π = 27/2 − are assigned to it based on angular distribution measurements. This state is the band head of a magnetic-rotational band, described by the coupling of a neutron hole in the 1i 13/2 subshell with the (3s −2 1/2 1h 9/2 1i 13/2 ) 11 − proton excitation. The pairing-plus-quadrupole tilted-axis cranking calculations reproduce the measured quadrupole moment with a moderate oblate deformation 2 = −0.11, similar to that of the 11 − proton intruder states, which occur in the even-even Pb nuclei in the region. This is the first direct measurement of a quadrupole moment and thus of the deformation of a magnetic-rotational band head.

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Magnetic Rotation

Pancholi¹

2011

Springer Tracts in Modern Physics

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Quadrupole moments andgfactors for high-spin neutron isomers inPb193

Cited by 14 publications

References 35 publications

Deformation parameters and transition probabilities for shears bands in Pb isotopes

Deformation parameters and transition probabilities for shears bands in Pb isotopes

Spin, quadrupole moment, and deformation of the magnetic-rotational band head inPb193

Magnetic Rotation

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