Shape Coexistence Near Neutron Number<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>20</mml:mn></mml:math>: First Identification of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>E</mml:mi><mml:mn>0</mml:mn></mml:math>Decay from the Deformed First Excited<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>J</mml:mi><mml:mi>π</mml:mi></mml:msup><mml:mo>=</mml:m

Schwerdtfeger, W.; Thirolf, P. G.; Wimmer, K.; Habs, D.; Mach, H.; Rodrı́guez, T.; Bildstein, V.; Egido, J.L.; Fraile, L. M.; Gernhäuser, R.; Hertenberger, R.; Heyde, K.; Hoff, P.; Hübel, H.; Köster, U.; Kroll, Thilo; Krücken, R.; Lutter, R.; Morgan, T.; Ring, P.

doi:10.1103/physrevlett.103.012501

Cited by 68 publications

(116 citation statements)

References 26 publications

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“…This work has been supported by BMBF 06BN109, GA of Czech Republic 202/040791, MICINN-FPA2009-13377, CM-HEPHACOS-S2009/ESP-1473 (Spain), the EC through the Eurons project [15] b [17,20] c [28] d [5] e [37] f [14] …”

Section: H Y S I C a L R E V I E W L E T T E R Smentioning

confidence: 99%

“…week ending 31 AUGUST 2012 0031-9007=12=109(9)=092503 (5) 092503-1 Ó 2012 American Physical Society for about 30 years until the recent discovery of the 0 þ 2 states in 30 Mg at 1789 keV [14] and in 32 Mg at 1058 keV [15]. While the excited 0 þ state in 30 Mg could be assigned to the intruder configuration [14], the assignment of the ground state to the intruder and the excited 0 þ state to the normal configuration in 32 Mg has been recently questioned [16].…”

mentioning

confidence: 99%

“…While the excited 0 þ state in 30 Mg could be assigned to the intruder configuration [14], the assignment of the ground state to the intruder and the excited 0 þ state to the normal configuration in 32 Mg has been recently questioned [16]. Detailed spectroscopy of 34 Si resulting in the discovery of a 0 þ 2 intruder state is an important step towards understanding the coexistence of the normal and intruder configurations [10].…”

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confidence: 99%

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Unveiling the Intruder Deformed02+State inSi34

et al. 2012

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The 0 þ 2 state in 34 Si has been populated at the GANIL-LISE3 facility through the decay of a newly discovered 1 þ isomer in 34 Al of 26(1) ms half-life. The simultaneous detection of e þ e À pairs allowed the determination of the excitation energy Eð0 þ 2 Þ ¼ 2719ð3Þ keV and the half-life T 1=2 ¼ 19:4ð7Þ ns, from which an electric monopole strength of 2 ðE0Þ ¼ 13:0ð0:9Þ Â 10 À3 was deduced. The 2 þ 1 state is observed to decay both to the 0 þ 1 ground state and to the newly observed 0 þ 2 state [via a 607(2) keV transition] with a ratio Rð2Gathering all information, a weak mixing with the 0 þ 1 and a large deformation parameter of ¼ 0:29ð4Þ are found for the 0 þ 2 state, in good agreement with shell model calculations using a new SDPF-U-MIX interaction allowing np-nh excitations across the N ¼ 20 shell gap.

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Section: H Y S I C a L R E V I E W L E T T E R Smentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Unveiling the Intruder Deformed02+State inSi34

et al. 2012

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“…This approach (axial GCM-PNAMP) has been successfully applied to study many phenomena like, for example, the appearance or degradation of shell closures in neutron rich nuclei [3,[5][6][7], shape coexistence in proton rich Kr [8] or Pb [9,10] isotopes or shape transitions in the A ∼ 150 region [11,12]. However, the intrinsic wave functions used there were restricted to have axial symmetry, with K = 0, because this assumption simplifies considerably the angular momentum projection and lightens the computational burden significantly.…”

Section: Introductionmentioning

confidence: 99%

Triaxial angular momentum projection and configuration mixing calculations with the Gogny force

2010

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We present the first implementation in the (β, γ) plane of the generator coordinate method with full triaxial angular momentum and particle number projected wave functions using the Gogny force. Technical details about the performance of the method and the convergence of the results both in the symmetry restoration and the configuration mixing parts are discussed in detail. We apply the method to the study of 24 Mg, the calculated energies of excited states as well as the transition probabilities are compared to the available experimental data showing a good overall agreement. In addition, we present the RVAMPIR approach which provides a good description of the ground and gamma bands in the absence of strong mixing.

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“…This new type of Mini-Orange spectrometer (MOS) [1][2][3][4] meet the requirements for in-beam measuring conversion electrons due to its advantages of wide energy range, high transmission efficiency, high energy resolution, and easy operation. The MOS has been constructed for a long time and used to measure conversion electrons [5][6][7][8][9][10][11]. Before the present work, however, there is no any MOS has been built and used in nuclear spectroscopy experiments in China.…”

Section: Introductionmentioning

confidence: 99%

Mini-orange spectrometer at CIAE

Zheng¹,

Wu²,

Li³

et al. 2016

Chinese Phys. C

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A Mini-Orange spectrometer used for in-beam measurements of internal conversion electrons, which consists of a Si(Li) detector and different sets of SmO5 permanent magnets for filtering and transporting the conversion electrons to the Si(Li) detector, has been developed at China Institute of Atomic Energy. The working principle and configuration of the Mini-Orange spectrometer are described. The performance of the setup is illustrated by measured singles conversion electron spectra using the Mini-Orange spectrometer.

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Shape Coexistence Near Neutron NumberN=20: First Identification of theE0Decay from the Deformed First ExcitedJπ=

Abstract: Shape coexistence near the neutron number N= 20: First identification of the E0 decay from the deformed 0 + 2 state in 30 Mg

Cited by 68 publications

References 26 publications

Unveiling the Intruder Deformed02+State inSi34

Unveiling the Intruder Deformed02+State inSi34

Triaxial angular momentum projection and configuration mixing calculations with the Gogny force

Mini-orange spectrometer at CIAE

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