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Journal Articles

Intruder configurations in $$^{29}$$Ne at the transition into the island of inversion; Detailed structure study of $$^{28}$$Ne

Wang, H.*; Yasuda, Masahiro*; Kondo, Yosuke*; Nakamura, Takashi*; Tostevin, J. A.*; Ogata, Kazuyuki*; Otsuka, Takaharu*; Poves, A.*; Shimizu, Noritaka*; Yoshida, Kazuki; et al.

Physics Letters B, 843, p.138038_1 - 138038_9, 2023/08

https://doi.org/10.1016/j.physletb.2023.138038
 Times Cited Count：5 Percentile：69.17(Astronomy & Astrophysics)

Detailed $$gamma$$-ray spectroscopy of the exotic neon isotope $$^{28}$$Ne has been performed using the one-neutron removal reaction from $$^{29}$$Ne. Based on an analysis of parallel momentum distributions, a level scheme with spin-parity assignments has been constructed for $$^{28}$$Ne and the negative-parity states are identified for the first time. The measured partial cross sections and momentum distributions reveal a significant intruder p-wave strength providing evidence of the breakdown of the N = 20 and N = 28 shell gaps. Only a weak, possible f-wave strength was observed to bound final states. Large-scale shell-model calculations with different effective interactions do not reproduce the large p-wave and small f-wave strength observed experimentally, indicating an ongoing challenge for a complete theoretical description of the transition into the island of inversion along the Ne isotopic chain.

Journal Articles

$$beta^-$$ decay of $$T_z$$ = +$$frac{11}{2}$$ isotopes $$^{37}$$Al and $$^{39}$$Si; Understanding Gamow-Teller strength distribution in neutron-rich nuclei

Abromeit, B.*; Tripathi, V.*; Crawford, H. L.*; Liddick, S. N.*; Yoshida, Sota*; Utsuno, Yutaka; Bender, P. C.*; Crider, B. P.*; Dungan, R.*; Fallon, P.*; et al.

Physical Review C, 100(1), p.014323_1 - 014323_14, 2019/07

AA2019-0227.pdf:1.54MB

https://doi.org/10.1103/PhysRevC.100.014323
 Times Cited Count：2 Percentile：19.24(Physics, Nuclear)

no abstracts in English

Journal Articles

Spectroscopy of strongly deformed $$^{32}$$Ne by proton knockout reactions

Murray, I.*; MacCormick, M.*; Bazin, D.*; Doornenbal, P.*; Aoi, Nori*; Baba, Hidetada*; Crawford, H. L.*; Fallon, P.*; Li, K.*; Lee, J.*; et al.

Physical Review C, 99(1), p.011302_1 - 011302_7, 2019/01

AA2018-0517.pdf:0.8MB

https://doi.org/10.1103/PhysRevC.99.011302
 Times Cited Count：21 Percentile：84.53(Physics, Nuclear)

no abstracts in English

Journal Articles

$$beta$$ decay of $$^{38,40}$$Si ($$T_z$$ = +5, +6) to low-lying core excited states in odd-odd $$^{38,40}$$P isotopes

Tripathi, V.*; Lubna, R. S.*; Abromeit, B.*; Crawford, H. L.*; Liddick, S. N.*; Utsuno, Yutaka; Bender, P. C.*; Crider, B. P.*; Dungan, R.*; Fallon, P.*; et al.

Physical Review C, 95(2), p.024308_1 - 024308_7, 2017/02

AA2016-0485.pdf:0.5MB

https://doi.org/10.1103/PhysRevC.95.024308
 Times Cited Count：7 Percentile：46.53(Physics, Nuclear)

no abstracts in English

Journal Articles

Spectroscopy of $$^{153}$$Gd and $$^{157}$$Gd using the ($$p,d gamma$$) reaction

Ross, T. J.*; Hughes, R. O.*; Allmond, J. M.*; Beausang, C. W.*; Angell, C.; Basunia, M. S.*; Bleuel, D. L.*; Hurke, J. T.*; Casperson, R. J.*; Escher, J. E.*; et al.

Physical Review C, 90(4), p.044323_1 - 044323_12, 2014/10

https://doi.org/10.1103/PhysRevC.90.044323
 Times Cited Count：7 Percentile：44.71(Physics, Nuclear)

Journal Articles

Remnants of spherical shell structures in deformed nuclei; The Impact of an $$N$$ = 64 neutron subshell closure on the structure of $$N$$ $${approx}$$ 90 gadolinium nuclei

Ross, T. J.*; Hughes, R. O.*; Beausang, C. W.*; Allmond, J. M.*; Angell, C.; Basunia, M. S.*; Bleuel, D. L.*; Burke, J. T.*; Casperson, R. J.*; Escher, J. E.*; et al.

Physical Review C, 88(3), p.031301_1 - 031301_4, 2013/09

AA2013-0388.pdf:0.32MB

https://doi.org/10.1103/PhysRevC.88.031301
 Times Cited Count：7 Percentile：45.86(Physics, Nuclear)

Journal Articles

Spectroscopy of $$^{88}$$Y by the ($$p,dgamma$$) reaction

Ross, T. J.*; Beausang, C. W.*; Hughes, R. O.*; Scielzo, N. D.*; Burke, J. T.*; Allmond, J. M.*; Angell, C.; Basunia, M. S.*; Bleuel, D. L.*; Casperson, R. J.*; et al.

Physical Review C, 86(6), p.067301_1 - 067301_5, 2012/12

AA2012-0565.pdf:0.38MB

https://doi.org/10.1103/PhysRevC.86.067301
 Times Cited Count：3 Percentile：21.98(Physics, Nuclear)

Journal Articles

Measurement of the entry-spin distribution imparted to the high excitation continuum region of gadolinium nuclei via ($$p$$,$$d$$) and ($$p$$,$$t$$) reactions

Ross, T. J.*; Beausang, C. W.*; Hughes, R. O.*; Allmond, J. M.*; Angell, C.; Basunia, M. S.*; Bleuel, D. L.*; Burke, J. T.*; Casperson, R. J.*; Escher, J. E.*; et al.

Physical Review C, 85(5), p.051304_1 - 051304_5, 2012/05

AA2012-0155.pdf:0.62MB

https://doi.org/10.1103/PhysRevC.85.051304
 Times Cited Count：11 Percentile：51.70(Physics, Nuclear)

The surrogate reaction technique has been employed to $$(n,gamma)$$ cross sections in the actinide region to a precision of 20%, but in the rare earth region a factor of 2-3 discrepancy exists between the directly measured $$(n,gamma)$$ and extracted surrogate cross sections. A possible origin of this discrepancy lies in differences between the initial spin/parity population distribution. To investigate this, the angular momentum transfer of the surrogate reaction in Gd nuclei has been measured.

Journal Articles

Multi-intruder structures in $$^{34}$$P

Bender, P. C.*; Tabor, S. L.*; Tripathi, V.*; Hoffman, C. R.*; Hamilton, L.*; Volya, A.*; Clark, R. M.*; Fallon, P.*; Macchiavelli, A. O.*; Paschalis, S.*; et al.

Physical Review C, 85(4), p.044305_1 - 044305_10, 2012/04

https://doi.org/10.1103/PhysRevC.85.044305
 Times Cited Count：12 Percentile：54.07(Physics, Nuclear)

The available experimental information on $$^{34}$$P has been greatly increased through the analysis of $$gamma$$ decays in coincidence with protons from the interaction of an $$^{18}$$O beam at 24 MeV with an $$^{18}$$O target. Light charged particles from the reaction were detected with Microball, and multiple $$gamma$$ ray coincidences with Gammasphere. Many newly observed $$gamma$$ transitions have been identified and placed in the level scheme. Additionally, for most states, spins have been assigned based on measured $$gamma$$ ray angular distributions while parities were inferred from lifetimes determined through Doppler-broadened line-shape analysis. Most of the states observed have been interpreted in terms of shell-model calculations using the WBP-a and SDPF-NR interactions having one particle in the 0$$f$$$$_{7/2}$$ or 1$$p$$$$_{3/2}$$ orbital. The two calculations agree almost equally well with the data resulting in root-mean-square differences of about 200 keV. However, two of a few high-lying states may be associated with stretched $$pi$$$$f$$$$_{7/2}$$ $$otimes$$ $$nu$$$$f$$$$_{7/2}$$ states, but the calculations over-predict their energies by 2-3 MeV. Furthermore, a newly observed long-lived 7919-keV state is established for which no explanation is available at present.

Journal Articles

Two-proton knockout from $$^{32}$$Mg; Intruder amplitudes in $$^{30}$$Ne and implications for the binding of $$^{29,31}$$F

Fallon, P.*; Rodriguez-Vieitez, E.*; Macchiavelli, A. O.*; Gade, A.*; Tostevin, J. A.*; Adrich, P.*; Bazin, D.*; Bowen, M.*; Campbell, C. M.*; Clark, R. M.*; et al.

Physical Review C, 81(4), p.041302_1 - 041302_5, 2010/04

https://doi.org/10.1103/PhysRevC.81.041302
 Times Cited Count：42 Percentile：88.24(Physics, Nuclear)

no abstracts in English

Journal Articles

Intruder excitations in $$^{35}$$P

Wiedeking, M.*; Rodriguez-Vieitez, E.*; Fallon, P.*; Carpenter, M. P.*; Clark, R. M.*; Cline, D.*; Cromaz, M.*; Descovich, M.*; Janssens, R. V. F.*; Lee, I.-Y.*; et al.

Physical Review C, 78(3), p.037302_1 - 037302_4, 2008/09

https://doi.org/10.1103/PhysRevC.78.037302
 Times Cited Count：14 Percentile：63.67(Physics, Nuclear)

no abstracts in English

11 (Records 1-11 displayed on this page)
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