Coulomb dissociation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">P</mml:mi><mml:mprescripts/><mml:none/><mml:mn>27</mml:mn></mml:mmultiscripts></mml:math>at 500 MeV/u

Marganiec, J.; Beceiro-Novo, S.; Typel, S.; Langer, C.; Wimmer, Christian; Álvarez‐Pol, H.; Aumann, T.; Boretzky, K.; Casarejos, E.; Chatillon, A.; Cortina-Gil, D.; Pramanik, U. Datta; Elekes, Z.; Fülöp, Zs.; Galaviz, D.; Geißel, H.; Giron, S.; Greife, U.; Hammache, F.; Heil, M.; Hoffman, James M.; Johansson, H.; Kiselev, O.; Kurz, N.; Larsson, Kristian; Bleis, T. Le; Litvinov, Yu. A.; Mahata, K.; Muentz, C.; Nociforo, C.; Ott, W.; Paschalis, S.; Plag, R.; Prokopowicz, W.; Tajes, C. Rodríguez; Rossi, D.; Simon, H.; Stănoiu, M.; Stroth, J.; Sümmerer, K.; Wagner, A.; Wamers, F.; Weick, H.; Wiescher, M.

doi:10.1103/physrevc.93.045811

Cited by 7 publications

(49 citation statements)

References 32 publications

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“…The excitation energy of the first excited state in 27 P was directly obtained from the measured γ -ray energy including a trivial correction (25 eV) for the energy carried by the daughter nucleus recoiling from γ -ray emission. The result compares fairly well with, as well as more precise than, the literature values of 1120(8) keV [94], 1137(33) keV [39], 1125(6) keV [89], and 1119(8) keV [89], while is slightly lower than the values of 1199 (19) keV [32], 1180 keV [93], and 1176(32) keV [37]. It should be noted that the excitation energies of the first excited state in 27 P reported by Refs.…”

Section: B Decay Schemesupporting

confidence: 87%

“…Togano [37] 315(17) -805(32) ---Marganiec [39] 267(20) -722(56) ---Janiak [18] 332 30 a For the sake of completeness, the relative energies between 26 Si and proton measured via the Coulomb dissociation of 27 P from Refs. [37,39] are also listed. The relative energy is equivalent to the decay energy of the β-delayed protons from 27 S decay.…”

Section: -7mentioning

confidence: 99%

“…Most of the radiative capture reactions occurring in classical novae and type I x-ray bursts (XRBs) proceed by resonant capture through narrow, isolated resonances in the product nuclei [27][28][29][30][31]. Nuclear reaction measurements have been the preferred method to obtain the astrophysical reaction rate [32][33][34][35][36][37][38][39]. Nevertheless, nuclear decay measurement provides new insights on the resonances of astrophysical interest in comparison with the reaction experiments [40,41].…”

Section: Introductionmentioning

confidence: 99%

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β -decay spectroscopy of S27

Sun¹,

Xu²,

Lin³

et al. 2019

Phys. Rev. C

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Background: β-decay spectroscopy provides valuable information on exotic nuclei and a stringent test for nuclear theories beyond the stability line. Purpose: To search for new β-delayed protons and γ rays of 25 Si to investigate the properties of 25 Al excited states. Method: 25 Si β decays were measured by using the Gaseous Detector with Germanium Tagging system at the National Superconducting Cyclotron Laboratory. The protons and γ rays emitted in the decay were detected simultaneously. A Monte Carlo method was used to model the Doppler broadening of 24 Mg γ-ray lines caused by nuclear recoil from proton emission. Shell-model calculations using two newly-developed sd-shell Hamiltonians, USDC and USDI, were performed. Results: The most precise 25 Si half-life to date has been determined. A new proton branch at 724(4) keV and new proton-γ-ray coincidences have been identified. Three 24 Mg γ-ray lines and eight 25 Al γ-ray lines are observed for the first time in 25 Si decay. The first measurement of the 25 Si β-delayed γ ray intensities through the 25 Al unbound states is reported. All the bound states of 25 Al are observed to be populated in the β decay of 25 Si. Several inconsistencies between the previous measurements have been resolved, and new information on the 25 Al level scheme is provided. An enhanced decay scheme has been constructed and compared to the mirror decay of 25 Na and the shell-model calculations. Conclusions: The measured excitation energies, γ-ray and proton branchings, log f t values, and Gamow-Teller transition strengths for the states of 25 Al populated in the β decay of 25 Si are in good agreement with the shell model calculations, offering gratifyingly consistent insights into the fine nuclear structure of 25 Al.

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Section: B Decay Schemesupporting

confidence: 87%

Section: -7mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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β -decay spectroscopy of S27

Sun¹,

Xu²,

Lin³

et al. 2019

Phys. Rev. C

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“…Let us first note that, as already seen in Fig. 8, the ratio method applied to 27 P leads to a very good agreement between the DEA calculation and its REB prediction, whereas for the d-bound nuclei 17 F and 25 Al the DEA ratio merely reproduces the order of magnitude of the form factor.…”

Section: B 12 C Target At 60 Mev/nucleonsupporting

confidence: 64%

“…In the case of 27 P, these scaled results are superimposed on the original V cp calculations, confirming that the reaction process is peripheral and probes only the tail of the ground-state wave function. For 17 F and 25 Al, although the scaled REB form factors are on top of the V cp ones, this is not the case for the DEA ratios. The reaction process for these projectiles is consequently less peripheral, meaning that it is sensitive to the internal part of the wave function, which is not unexpected for systems bound in a d wave.…”

Section: B 12 C Target At 60 Mev/nucleonmentioning

confidence: 88%

Extension of the ratio method to proton-rich nuclei

Yun

Colomer

Pang

et al. 2019

J. Phys. G: Nucl. Part. Phys.

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Background: The ratio method has been developed to improve the study of one-neutron halo nuclei through reactions. By taking the ratio of angular distributions for two processes, viz. breakup and elastic scattering, this new observable is nearly independent of the reaction mechanism and hence much more sensitive to the projectile structure than the cross sections for each single process.Purpose: We study the extension of the ratio method to proton-rich nuclei. We also explore the optimum experimental conditions for measuring this new observable. Method:We compare accurate dynamical calculations of reactions for proton-rich projectiles to the prediction of the ratio method. We use the dynamical eikonal approximation that provides good results for this kind of reactions at intermediate energy.Results: Our tests for 8 B, an archetypical one-proton halo nucleus, on Pb, Ni, and C targets at 44 MeV/nucleon show that the method can be extended to proton-rich nuclei. The sensitivity of the ratio observable to the singleparticle structure of the projectile is studied in detail. The method is not affected if energy ranges-or bins-are considered in the projectile continuum. This makes the ratio easier to measure experimentally by increasing the breakup cross section. Light elements provide the optimal targets to exploit this observable in practice. We also extend our analysis to 17 F, 25 Al, and 27 P, whose study is of interest to both nuclear astrophysics and nuclear structure.Conclusions: We show that, albeit less precise than for one-neutron halo nuclei, the ratio method can be extended to proton-rich nuclei and that it provides valuable information about their structure. It is especially accurate for nuclei with a valence proton loosely bound in an s or p orbital, i.e. for one-proton halo nuclei.

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