Experimental Study of Beta-Delayed Proton Emission of
                    <sup>36,37</sup>
                    Ca

Sun, L. J.; Lin, C. J.; Xu, X. X.; Wang, Jiansong; Jia, H. M.; Feng, Yan; Yang, Y. Y.; Yang, L.; Bao, Peng; Zhang, Huanqiao; Jin, S.; Wu, Zihao; Zhang, Ningtao; Chen, Si-Ze; Ma, J.B.; Ma, P.; Nan-Ru, MA; Zu-Hua, Liu

doi:10.1088/0256-307x/32/1/012301

Cited by 11 publications

(4 citation statements)

References 51 publications

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“…Besides the great interest in the neutron-rich isotopes, the proton-rich (also referred to as neutron-deficient) isotopes have also attracted great attention from experimentalists. The reported experimental results have illustrated exotic phenomena in proton-rich isotopes, such as the proton halo and core deformation [9,10], and (βdelayed) one or two proton emissions [11][12][13][14][15][16]. Moreover, searches for new isotopes near the proton drip line are also motivated by new physics related to the high isospin asymmetry of new magic numbers, new single particle structures, short-range correlations, etc.…”

Section: Introductionmentioning

confidence: 99%

Predictions for cross sections of light proton-rich isotopes in the ⁴⁰ Ca + ⁹ Be reaction

Song

Wei

2018

Chinese Phys. C

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The cross sections for Z = 10 -19 with isotopes Tz =−3/2 to −5 in the 140A MeV 40 Ca + 9 Be projectile fragmentation reaction have been predicted. An empirical formula based on the correlation between the cross section and average binding energy of an isotope has been adopted to predict the cross section. The binding energies in the AME16, WS4, and the theoretical prediction by the spherical relativistic continuum Hartree−Bogoliubov theory have been used. Meanwhile, the fracs parametrization and the modified statistical abrasion-ablation model are also used to predict the cross sections for the proton-rich isotopes. The predicted cross sections for the Tz =−3 isotopes are close to 10 −10 mb, which hopefully can be studied experimentally. In addition, based on the predicted cross sections, Z = 14 is suggested to be a new magic number in the light proton-rich nuclei with Tz −3/2, for which the phenomenon is much more evident than it is from the average binding energy per nucleon.

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Section: Introductionmentioning

confidence: 99%

Predictions for cross sections of light proton-rich isotopes in the ⁴⁰ Ca + ⁹ Be reaction

Song

Wei

2018

Chinese Phys. C

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“…Silicon detectors play an important role for chargedparticle detection and various silicon-detector arrays have been built and successfully commissioned to measure the multiparticle and multistep decay modes expected in the nuclei near the proton-drip line [10,[51][52][53][54]. Several innovative new techniques and solutions such as printed circuit boards, cryogenic system, leading edge discrimination, front-back coincidence of double-sided silicon strip detectors (DSSDs), and energy calibration from an internal source were conceived and implemented on the bases of our previous decay measurements with an implantation method [11,[53][54][55][56][57][58][59] and complete-kinematics measurements [60][61][62][63]. In the present experiment, in order to reliably extract information about the very rare decay events from disturbances, a high signal-tonoise ratio, large solid-angle coverage, broad dynamic range, FIG.…”

Section: Introductionmentioning

confidence: 99%

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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“…Besides the great interests in the neutron-rich isotopes, the proton-rich (also refers to neutron-deficient) isotopes have also attracted great attention from experimentalists. The reported experimental results have illustrated exotic phenomena in proton-rich isotopes, such as the proton halo and core deformation [9,10], (β−delayed) one or two protons emissions [11][12][13][14][15][16]. Moreover, the researches for new isotopes near the proton-drip line are also motivated by new physics related to the very isospin asymmetry of new magic number, new single particle structure, short-range correlation, etc.…”

Section: Introductionmentioning

confidence: 99%

Predictions for cross sections of light proton-rich isotopes in $^{40}$Ca + $^{9}$Be reaction

Song,

Wei,

2018

Preprint

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The cross sections for the Z = 10 -19 with isotopes Tz = −3/2 to −5 in the 140A MeV 40 Ca + 9 Be projectile fragmentation reaction have been predicted. An empirical formula based on the correlation between the cross section and average binding energy of isotope has been adopted to predict the cross section. The binding energies in the AME16, WS4, and the theoretical prediction by the spherical relativistic continuum Hartree−Bogoliubov theory have been used. Meanwhile, the fracs parametrization and the modified statistical abrasion-ablation model are also used to predict the cross sections for the proton-rich isotopes. The predicted cross sections for the Tz = −3 isotopes are close to 10 −10 mb, which hopefully can be studied in experiment. In addition, based on the predicted cross sections, the Z = 14 is suggested to be a new magic number in the light proton-rich nuclei with Tz ≤ −3/2, of which the phenomenon is much more evident than it is from the average binding energy per nucleon.

show abstract

Experimental Study of Beta-Delayed Proton Emission of ^36,37 Ca

Cited by 11 publications

References 51 publications

Predictions for cross sections of light proton-rich isotopes in the ⁴⁰ Ca + ⁹ Be reaction

Predictions for cross sections of light proton-rich isotopes in the ⁴⁰ Ca + ⁹ Be reaction

β -decay spectroscopy of S27

Predictions for cross sections of light proton-rich isotopes in $^{40}$Ca + $^{9}$Be reaction

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Experimental Study of Beta-Delayed Proton Emission of 36,37 Ca

Cited by 11 publications

References 51 publications

Predictions for cross sections of light proton-rich isotopes in the 40 Ca + 9 Be reaction

Predictions for cross sections of light proton-rich isotopes in the 40 Ca + 9 Be reaction

β -decay spectroscopy of S27

Predictions for cross sections of light proton-rich isotopes in $^{40}$Ca + $^{9}$Be reaction

Contact Info

Product

Resources

About

Experimental Study of Beta-Delayed Proton Emission of ^36,37 Ca

Predictions for cross sections of light proton-rich isotopes in the ⁴⁰ Ca + ⁹ Be reaction

Predictions for cross sections of light proton-rich isotopes in the ⁴⁰ Ca + ⁹ Be reaction