S. Kanno

Proton-proton correlations in distinguishing the two-proton emission mechanism of Al23 and Mg22

Deqing Fang, Y. G., Xinyue Sun, Pei Zhou et autres

The proton-proton momentum correlation functions $[{C}_{pp}(q)]$ for the kinematically complete decay channels $^{23}\mathrm{Al}\ensuremath{\rightarrow}p+p+^{21}\mathrm{Na}$ and $^{22}\mathrm{Mg}\ensuremath{\rightarrow}p+p+^{20}\mathrm{Ne}$ have been measured at the RIKEN RI Beam Factory. From the very different correlation strength of ${C}_{pp}(q)$ for $^{23}\mathrm{Al}$ and $^{22}\mathrm{Mg}$, the source size and emission time …

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Different mechanism of two-proton emission from proton-rich nuclei 23Al and 22Mg

Y. G., D. Q. Fang, Xinyue Sun, Pei Zhou et autres

Two-proton relative momentum (qpp) and opening angle (θpp) distributions from the three-body decay of two excited proton-rich nuclei, namely Al23→p+p+Na21 and Mg22→p+p+Ne20, have been measured with the projectile fragment separator (RIPS) at the RIKEN RI Beam Factory. An evident peak at qpp∼20 …

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Collectivity of neutron-rich Ti isotopes

Hiroaki R. Suzuki, N. Aoi, E. Takeshita, Satoshi Takeuchi et autres

The structure of the neutron-rich nucleus ${}^{58}$Ti was investigated via proton inelastic scattering in inverse kinematics at a mean energy of 42.0 MeV/nucleon. By measuring the deexcitation $\ensuremath{\gamma}$ rays, three transitions with the energies of 1046(11) keV, 1376(18) keV, and 1835(27) keV …

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Hindered Proton Collectivity in S121628 : Possible Magic Number at Z=16

Y. Togano, Y. Yamada, N. Iwasa, Kazunari Yamada et autres

The reduced transition probability $B(E2;{0}_{gs}^{+}\ensuremath{\rightarrow}{2}_{1}^{+})$ for $^{28}\mathrm{S}$ was obtained experimentally using Coulomb excitation at $53\text{ }\text{ }\mathrm{MeV}/\mathrm{nucleon}$. The resultant $B(E2)$ value $181(31)\text{ }\text{ }{e}^{2}{\mathrm{fm}}^{4}$ is smaller than the expectation based on empirical $B(E2)$ systematics. The double ratio $|{M}_{n}/{M}_{p}|/(N/Z)$ of the ${0}_{gs}^{+}\ensuremath{\rightarrow}{2}_{1}^{+}$ transition …

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Hindered proton collectivity in the proton-rich nucleus [sup 28]S: Possible magic number Z = 16

Y. Togano, Y. Yamada, N. Iwasa, K. Yamada et autres

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Y. Togano, Y. Yamada, N. Iwasa, K. Yamada, T. …

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Front Matter for Volume 1491

Y. Togano, Yoshiyuki Yamada, N. Iwasa, Kazunari Yamada et autres

The reduced transition probability B(E2;Ot -+ 2i) for the proton-rich nucleus 28S was determined experimentally using intermediate-energy Coulomb excitation.The resultant B(E2) value 181(31) e 2 fm 4 is smaller than those of neighboring N = 12 isotones and Z = 16 isotopes.The …

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Experimental Investigation of the Stellar Reaction30S(p,γ)31Cl via Coulomb Dissociation

Y. Togano, T. Motobayashi, N. Aoi, H. Baba et autres

Coulomb dissociation of the proton-rich nucleus 31 Cl was studied experimentally using a 31 Cl beam at 58 MeV/nucleon with a lead target. The relative energy spectrum of 30 S+p system was obtained from the measured momentum vectors of the reaction products …

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Resonance states in 27 P using Coulomb dissociation and their effect on the stellar reaction 26 Si( p , γ ) 27 P

Y. Togano, T. Gomi, T. Motobayashi, Yukio Ando et autres

The stellar reaction ${}^{26}$Si($p,\phantom{\rule{-0.16em}{0ex}}\ensuremath{\gamma}$)${}^{27}$P was studied in the Coulomb dissociation of ${}^{27}$P. Two known resonance levels in ${}^{27}$P were excited and a candidate for the third excited state was found in the ${}^{26}$Si $p$ relative energy spectrum. The $E$2 resonance strengths $\ensuremath{\omega}\ensuremath{\gamma}$ …

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Measurements on diproton emission from the break-up channels of 23Al and 22Mg

Y. G., De-Qing Fang, Xiao-Yan Sun, Pei Zhou et autres

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MEASUREMENT OF THE PROTON-PROTON CORRELATION FUNCTION FROM THE BREAK-UP OF 22 Mg AND 20 Ne

X. Sun, J. G. CHEN, D. Q. Fang, Y. G. et autres

An experiment of 22 Mg and 20 Ne beams bombarding on a 12 C target at an energy of 60~70 A MeV has been performed at the RIKEN projectile fragment separator (RIPS) in the RIKEN Ring Cyclotron Facility to study the two-proton …

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Enhanced collectivity in 74Ni

N. Aoi, S. Kanno, Satoshi Takeuchi, Hiroaki R. Suzuki et autres

The neutron-rich nucleus 74Ni was studied with inverse-kinematics inelastic proton scattering using a 74Ni radioactive beam incident on a liquid hydrogen target at a center-of-mass energy of 80 MeV. From the measured de-excitation γ rays, the population of the first 2+ state …

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THE 6 He +6 He AND α+8 He CLUSTER STATES IN 12 Be VIA α-INELASTIC SCATTERING

Akito Saito, S. Shimoura, T. Minemura, Y. U. Matsuyama et autres

Cluster structures in the neutron-rich nucleus 12 Be were experimentally investigated via α-inelastic scattering. Excited states in the 12 Be nucleus were populated by a 12 Be (αα') reaction at 60 A MeV in the inverse kinematics, and identified by measuring a …

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