New lifetime measurements in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Pd</mml:mi><mml:mprescripts /><mml:none /><mml:mn>109</mml:mn></mml:mmultiscripts></mml:math>and the onset of deformation at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>60</mml:mn></mml:mrow></mml:math>

Bucher, B.; Mach, H.; Aprahamian, A.; Simpson, G. S.; Rissanen, J.; Ghiţă, D.; Kurcewicz, W.; Äystö, J.; Bentley, Ian; Eronen, T.; Fraile, L. M.; Jokinen, A.; Karvonen, P.; Moore, I. D.; Penttilä, H.; Reponen, M.; Ruchowska, E.; Saastamoinen, A.; Smith, M. K.; Weber, C.

doi:10.1103/physrevc.92.064312

Cited by 6 publications

(5 citation statements)

References 69 publications

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“…As pointed out in Ref. [52] in isotopes with some collectivity this excitation is most probably due to seniority-three coupling of protons occupying the πg 9/2 shell. Therefore, one may expect the 7/2 + level below the 9/2 + level in Rh isotopes with N in the region 58-64.…”

Section: Excited Levels In 117 Pdmentioning

confidence: 58%

“…The general structure of the positive-parity levels in lighter odd-A Pd isotopes was described in the recent study of 109 Pd [52]. Below, we present this picture updated with the new data for 117 Pd and some new observations for lighter Pd isotopes, which should help understanding the structure of 117 Pd observed in this work.…”

Section: A Positive-parity Levels In Pd Isotopesmentioning

confidence: 66%

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Excited levels in the multishaped Pd117 nucleus studied via β decay of Rh117

et al. 2018

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Monoisotopic samples of exotic, neutron-rich 117 Rh nuclei, produced in the proton-induced fission of 238 U and separated using the IGISOL mass separator coupled to the JYFLTRAP Penning trap, were used to perform β and γ coincidence spectroscopy of 117 Pd. The spin parity of the ground state of 117 Pd was determined to be 1/2 + and the 19.1 ms isomer at 203.2 keV was assigned a spin-parity 7/2 − . The 117 Rh β − -decay scheme was considerably extended, and various sequences of the levels were interpreted as resulting from the prolate, oblate, and triaxial nuclear shapes. Some of the β − decays were considered as the allowed Gamow-Teller transitions. The experimental distribution of Gamow-Teller strength is discussed.

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Section: Excited Levels In 117 Pdmentioning

confidence: 58%

Section: A Positive-parity Levels In Pd Isotopesmentioning

confidence: 66%

Excited levels in the multishaped Pd117 nucleus studied via β decay of Rh117

et al. 2018

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“…The most neutron-rich A=109 isotope produced from IGISOL in significant quantities was 109 Mo, which meant levels and γ rays from all its daughters were observed down to the stable isotope 109 Ag. The present report focuses on lifetime measurements made in 109 Rh, while measurements from 109 Pd, 109 Ru, and 109 Tc have been reported previously [71,72].…”

Section: Experiments and Analysismentioning

confidence: 96%

“…Then to obtain timing information Ge-β-LaBr 3 events are used where the time is recorded through fast electronics; the present case utilized time-to-amplitude converters (TACs) started by β's in the plastic and stopped by γ's in the LaBr 3 [71], both having excellent temporal resolution.…”

Section: Experiments and Analysismentioning

confidence: 99%

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New insights into triaxiality and shape coexistence from odd-mass Rh109

et al. 2018

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Rapid shape evolutions near A=100 are now the focus of much attention in nuclear science. Much of the recent work has been centered on isotopes with Z≤40, where the shapes are observed to transition between near-spherical to highly-deformed with only a single pair of neutrons added. At higher Z, the shape transitions become more gradual as triaxiality sets in, yet the coexistence of varying shapes continues to play an important role in the low-energy nuclear structure, particularly in the odd-Z isotopes. This work aims to characterize competing shapes in the triaxial region between Zr and Sn isotopes using ultra-fast timing techniques to measure lifetimes of excited states in the neutron-rich nucleus, 109 Rh. The measurements confirm the persistence at higher-Z of similarlylarge deformations observed near Z=40. Moreover, we show that new self-consistent mean-field calculations, with proper treatment of the odd nucleon, are able to reproduce the coexisting triaxial and highly-deformed configurations revealing, for the first time, the important contribution of the unpaired nucleon to these different shapes based on the blocking of specific single-particle orbitals.

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Nuclear Data Sheets for A = 109

Kumar

Chen

Kondev

2016

Nuclear Data Sheets

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Xe) are presented. The experimental data are compiled and evaluated, and the best values for level and gamma-ray energies, quantum numbers, lifetimes, gamma-ray intensities, and other nuclear properties are recommended. Inconsistencies and discrepancies that exist in the literature are noted. This work supersedes the earlier evaluation by J. Blachot (2006Bl02), published in Nuclear Data Sheets 107, 355 (2006). General Policies and Organization of Material: see http://www.nndc.bnl.gov/nds/NDSPolicies.pdf.General Comments: The gamma-ray transition probabilities were calculated using the ENSDF analysis program ruler (http://www.nndc.bnl.gov/nndcscr/ensdf_pgm/analysis/ruler/). However, the reader should be warned that the program may produce incorrect results when dealing with non-symmetric uncertainties.Cutoff Date: Literature available in the NSR database up to May 31, 2016 has been included.

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New lifetime measurements inPd109and the onset of deformation atN=60

Cited by 6 publications

References 69 publications

Excited levels in the multishaped Pd117 nucleus studied via β decay of Rh117

Excited levels in the multishaped Pd117 nucleus studied via β decay of Rh117

New insights into triaxiality and shape coexistence from odd-mass Rh109

Nuclear Data Sheets for A = 109

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