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25 results on '"Michimasa, S."'

1. Nuclear reactions of 19,20C on a liquid hydrogen target measured with the superconducting TOF spectrometer

Author

Yamaguchi, T., primary, Tanaka, K., additional, Suzuki, T., additional, Ozawa, A., additional, Ohtsubo, T., additional, Aiba, T., additional, Aoi, N., additional, Baba, H., additional, Fukuda, M., additional, Hashizume, Y., additional, Inafuku, K., additional, Iwasa, N., additional, Izumikawa, T., additional, Kobayashi, K., additional, Komuro, M., additional, Kondo, Y., additional, Kubo, T., additional, Kurokawa, M., additional, Matsuyama, T., additional, Michimasa, S., additional, Motobayashi, T., additional, Nakabayashi, T., additional, Nakajima, S., additional, Nakamura, T., additional, Sakurai, H., additional, Shinoda, R., additional, Shinohara, M., additional, Suzuki, H., additional, Takechi, M., additional, Takeshita, E., additional, Takeuchi, S., additional, Togano, Y., additional, Yamada, K., additional, Yasuno, T., additional, and Yoshitake, M., additional

Published
2011
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2. Study of astrophysically important states in 26Si with the p(27Si,26Si*)d reaction and the p(25Al,p)25Al elastic scattering

Author

Chen, J., primary, Chen, A.A., additional, Schatz, H., additional, Kubono, S., additional, Reyes, A.B., additional, Smith, A., additional, Wales, B., additional, Ouellet, C., additional, Kahl, D., additional, Redondo, D.G., additional, Lorusso, G., additional, LeNestour, J., additional, Conca, J.P., additional, Smith, K., additional, Amthor, M., additional, Matos, M., additional, Yamaguchi, H., additional, Iwasa, N., additional, Hayakawa, S., additional, Michimasa, S., additional, Teranishi, T., additional, Kurihawa, Y., additional, and Wakabayashi, Y., additional

Published
2010
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3. Isoscalar compressional strengths in 14O

Author

Baba, H., primary, Shimoura, S., additional, Minemura, T., additional, Matsuyama, Y.U., additional, Saito, A., additional, Ryuto, H., additional, Aoi, N., additional, Gomi, T., additional, Higurashi, Y., additional, Ieki, K., additional, Imai, N., additional, Iwasa, N., additional, Iwasaki, H., additional, Kanno, S., additional, Kubono, S., additional, Kunibu, M., additional, Michimasa, S., additional, Motobayashi, T., additional, Nakamura, T., additional, Sakurai, H., additional, Serata, M., additional, Takeshita, E., additional, Takeuchi, S., additional, Teranishi, T., additional, Ue, K., additional, Yamada, K., additional, and Yanagisawa, Y., additional

Published
2007
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4. Proton Shell Structure in Neutron-rich 23F

Author

Michimasa, S., primary, Shimoura, S., additional, Iwasaki, H., additional, Tamaki, M., additional, Ota, S., additional, Aoi, N., additional, Baba, H., additional, Iwasa, N., additional, Kanno, S., additional, Kubono, S., additional, Kurita, K., additional, Kurokawa, M., additional, Minemura, T., additional, Motobayashi, T., additional, Notani, M., additional, Ong, H.J., additional, Saito, A., additional, Sakurai, H., additional, Takeshita, E., additional, Takeuchi, S., additional, Yanagisawa, Y., additional, and Yoshida, A., additional

Published
2007
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5. Study of Stellar Reactions in Explosive Hydrogen Burning with CRIB

Author

Kubono, S., primary, Teranishi, T., additional, Notani, M., additional, Yamaguchi, H., additional, Saito, A., additional, He, J.J., additional, Wakabayashi, M., additional, Fujikawa, H., additional, Amadio, G., additional, Baba, H., additional, Fukuchi, T., additional, Shimoura, S., additional, Michimasa, S., additional, Nishimura, S., additional, Nishimura, M., additional, Gono, Y., additional, Odahara, A., additional, Kato, S., additional, Moon, J.Y., additional, Lee, J.H., additional, Lee, C.S., additional, Kim, J.C., additional, Hahn, K.I., additional, Ishikawa, T., additional, Hashimoto, T., additional, Ishiyama, H., additional, Watanabe, Y.X., additional, Tanaka, M.H., additional, Miyatake, H., additional, Fülöp, Zs., additional, Guimarães, V., additional, and Lichtenthaler, R., additional

Published
2005
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6. Coulomb Dissociation of 23Al for the stellar 22Mg(p,γ)23Al reaction

Author

Gomi, T., primary, Motobayashi, T., additional, Ando, Y., additional, Aoi, N., additional, Baba, H., additional, Demichi, K., additional, Elekes, Z., additional, Fukuda, N., additional, Fülöp, Zs., additional, Futakami, U., additional, Hasegawa, H., additional, Higurashi, Y., additional, Ieki, K., additional, Imai, N., additional, Ishihara, M., additional, Ishikawa, K., additional, Iwasa, N., additional, Iwasaki, H., additional, Kanno, S., additional, Kondo, Y., additional, Kubo, T., additional, Kubono, S., additional, Kunibu, M., additional, Kurita, K., additional, Matsuyama, Y.U., additional, Michimasa, S., additional, Minemura, T., additional, Miura, M., additional, Murakami, H., additional, Nakamura, T., additional, Notani, M., additional, Ota, S., additional, Saito, A., additional, Sakurai, H., additional, Serata, M., additional, Shimoura, S., additional, Sugimoto, T., additional, Takeshita, E., additional, Takeuchi, S., additional, Togano, Y., additional, Ue, K., additional, Yamada, K., additional, Yanagisawa, Y., additional, and Yoneda, K., additional

Published
2005
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7. Study of 26Si(p,γ)27P reaction using Coulomb dissociation method

Author

Togano, Y., primary, Gomi, T., additional, Motobayashi, T., additional, Ando, Y., additional, Aoi, N., additional, Baba, H., additional, Demichi, K., additional, Elekes, Z., additional, Fukuda, N., additional, Fülöp, Zs., additional, Futakami, U., additional, Hasegawa, H., additional, Higurashi, Y., additional, Ieki, K., additional, Imai, N., additional, Ishihara, M., additional, Ishikawa, K., additional, Iwasa, N., additional, Iwasaki, H., additional, Kanno, S., additional, Kondo, Y., additional, Kubo, T., additional, Kubono, S., additional, Kunibu, M., additional, Kurita, K., additional, Matsuyama, Y.U., additional, Michimasa, S., additional, Minemura, T., additional, Miura, M., additional, Murakami, H., additional, Nakamura, T., additional, Notani, M., additional, Ota, S., additional, Saito, A., additional, Sakurai, H., additional, Serata, M., additional, Shimoura, S., additional, Sugimoto, T., additional, Takeshita, E., additional, Takeuchi, S., additional, Ue, K., additional, Yamada, K., additional, Yanagisawa, Y., additional, Yoneda, K., additional, and Yoshida, A., additional

Published
2005
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8. Direct measurement of the astrophysical reaction 14O(α,p)17F

Author

Notani, M., primary, Kubono, S., additional, Teranishi, T., additional, Yanagisawa, Y., additional, Michimasa, S., additional, Ue, K., additional, He, J.J., additional, Iwasaki, H., additional, Baba, H., additional, Tamaki, M., additional, Minemura, T., additional, Shimoura, S., additional, Hokoiwa, N., additional, Wakabayashi, Y., additional, Sasaki, T., additional, Fukuchi, T., additional, Odahara, A., additional, Gono, Y., additional, Fülöp, Zs., additional, Lee, E.K., additional, Hahn, K.I., additional, Moon, J.Y., additional, Yun, C.C., additional, Lee, J.H., additional, Lee, C.S., additional, and Kato, S., additional

Published
2004
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9. Molecular states in neutron-rich beryllium isotopes

Author

Saito, A., primary, Shimoura, S., additional, Takeuchi, S., additional, Motobayashi, T., additional, Minemura, T., additional, Matsuyama, Y.U., additional, Baba, H., additional, Akiyoshi, H., additional, Ando, Y., additional, Aoi, N., additional, Fülöp, Zs., additional, Gomi, T., additional, Higurashi, Y., additional, Hirai, M., additional, Ieki, K., additional, Imai, N., additional, Iwasa, N., additional, Iwasaki, H., additional, Iwata, Y., additional, Kanno, S., additional, Kobayashi, H., additional, Kubono, S., additional, Kunibu, M., additional, Kurokawa, M., additional, Liu, Z., additional, Michimasa, S., additional, Nakamura, T., additional, Ozawa, S., additional, Sakurai, H., additional, Serata, M., additional, Takeshita, E., additional, Teranishi, T., additional, Ue, K., additional, Yamada, K., additional, Yanagisawa, Y., additional, and Ishihara, M., additional

Published
2004
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10. The first excited state of30Ne studied by proton inelastic scattering in reversed kinematics

Author

Yanagisawa, Y., primary, Notani, M., additional, Sakurai, H., additional, Kunibu, M., additional, Akiyoshi, H., additional, Aoi, N., additional, Baba, H., additional, Demichi, K., additional, Fukuda, N., additional, Hasegawa, H., additional, Higurashi, Y., additional, Ishihara, M., additional, Iwasa, N., additional, Iwasaki, H., additional, Gomi, T., additional, Kanno, S., additional, Kurokawa, M., additional, Matsuyama, Y.U., additional, Michimasa, S., additional, Minemura, T., additional, Mizoi, T., additional, Nakamura, T., additional, Saito, A., additional, Serata, M., additional, Shimoura, S., additional, Sugimoto, T., additional, Takeshita, E., additional, Takeuchi, S., additional, Ue, K., additional, Yamada, K., additional, Yoneda, K., additional, and Motobayashi, T., additional

Published
2004
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11. Results of 21Na+p experiments at ISAC

Author

Azuma, R.E., primary, Bishop, S., additional, Buchmann, L., additional, Chatterjee, M.L., additional, Chen, A.A., additional, D'Auria, J.M., additional, Davinson, T., additional, Engel, S., additional, Fulton, B.R., additional, Gigliotti, D., additional, Greife, U., additional, Groombridge, D., additional, Hunter, D., additional, Hussein, A., additional, Hutcheon, D., additional, Jewett, C., additional, King, J.D., additional, Khan, N., additional, Kubono, S., additional, Laird, A.M., additional, Lamey, M., additional, Lewis, R., additional, Ling, L., additional, Liu, W., additional, Michimasa, S., additional, Murphy, A.S., additional, Olin, A., additional, Ottewell, D., additional, Parker, P., additional, Pearson, J., additional, Roberts, I., additional, Robinson, A., additional, Rogers, J.G., additional, Roy, G., additional, Ruiz, C., additional, Sarazin, F., additional, Shotter, A.C., additional, Sprenger, H., additional, Strieder, F., additional, Walden, P., additional, Woods, P.J., additional, and Wrede, C., additional

Published
2003
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12. Experimental studies using a low-energy RI beam separator at CNS

Author

Teranishi, T., primary, Kubono, S., additional, Shimoura, S., additional, Notani, M., additional, Yanagisawa, Y., additional, Michimasa, S., additional, Ue, K., additional, Iwasaki, H., additional, Kurokawa, M., additional, Satou, Y., additional, Morikawa, T., additional, Saito, A., additional, Baba, H., additional, Lee, J.H., additional, Lee, C.S., additional, Fülöp, Zs., additional, and Kato, S., additional

Published
2003
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13. Study on the 21Na(p,γ)22Mg stellar reaction by the (p,t) reaction

Author

Michimasa, S., primary, Kubono, S., additional, Park, S.H., additional, Teranishi, T., additional, Yanagisawa, Y., additional, Imai, N., additional, Fülöp, Zs., additional, Liu, X., additional, Minemura, T., additional, Yun, C.C., additional, D'Auria, J.M., additional, and Jackson, K.P., additional

Published
2003
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14. Study of resonance states using a low-energy RI beam separator at CNS

Author

Teranishia, T., primary, Kubono, S., additional, Shimoura, S., additional, Notani, M., additional, Yanagisawa, Y., additional, Michimasa, S., additional, Ue, K., additional, Iwasaki, H., additional, Kurokawa, M., additional, Satou, Y., additional, Morikawa, T., additional, Saito, A., additional, Baba, H., additional, Lee, J.H., additional, Lee, C.S., additional, Fülöp, Zs., additional, and Kato, S., additional

Published
2003
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15. Study of the 22Mg(p,γ)23Al reaction with the Coulomb-dissociation method

Author

Gomi, T., primary, Motobayashi, T., additional, Yoneda, K., additional, Kanno, S., additional, Aoi, N., additional, Ando, Y., additional, Baba, H., additional, Demichi, K., additional, Fülöp, Zs., additional, Futakami, U., additional, Hasegawa, H., additional, Higurashi, Y., additional, Ieki, K., additional, Imai, N., additional, Iwasa, N., additional, Iwasaki, H., additional, Kubo, T., additional, Kubono, S., additional, Kunibu, M., additional, Matsuyama, Y.U., additional, Michimasa, S., additional, Minemura, T., additional, Murakami, H., additional, Nakamura, T., additional, Saito, A., additional, Sakurai, H., additional, Serata, M., additional, Shimoura, S., additional, Sugimoto, T., additional, Takeshita, E., additional, Takeuchi, S., additional, Ue, K., additional, Yamada, K., additional, Yanagisawa, Y., additional, Yoshida, A., additional, and Ishihara, M., additional

Published
2003
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16. Nuclear astrophysics studiesat dragon: The 21Na(p,γ)22Mg reaction and oxygen-neon novae

Author

Bishop, S., primary, Azuma, R., additional, Buchmann, L., additional, Chen, A.A., additional, Chatterjee, M.L., additional, D'Auria, J.M., additional, Engel, S., additional, Gigliotti, D., additional, Greife, U., additional, Hunter, D., additional, Hussein, A., additional, Hutcheon, D., additional, Jewett, C., additional, King, J., additional, Kubono, S., additional, Lamey, M., additional, Lewis, R., additional, Liu, W., additional, Michimasa, S., additional, Olin, A., additional, Ottewell, D., additional, Parker, P.D., additional, Rogers, J., additional, and Wrede, C., additional

Published
2003
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17. Test of the ANC method via (d,p) reaction

Author

Imai, N., primary, Aoi, N., additional, Kubono, S., additional, Beaumel, D., additional, Abe, K., additional, Kato, S., additional, Kubo, T., additional, Kumagai, K., additional, Kurokawa, M., additional, Liu, X., additional, Mengoni, A., additional, Michimasa, S., additional, Ohnuma, H., additional, Sakurai, H., additional, Strasser, P., additional, Teranishi, T., additional, and Ishihara, M., additional

Published
2001
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18. Proton Shell Structure in Neutron-rich 23F

Author

Michimasa, S., Shimoura, S., Iwasaki, H., Tamaki, M., Ota, S., Aoi, N., Baba, H., Iwasa, N., Kanno, S., Kubono, S., Kurita, K., Kurokawa, M., Minemura, T., Motobayashi, T., Notani, M., Ong, H.J., Saito, A., Sakurai, H., Takeshita, E., and Takeuchi, S.

Subjects
*PARTICLES (Nuclear physics), *CHARGE transfer, *NUCLEAR reactions, *ANGULAR correlations (Nuclear physics)
Abstract

The proton shell structure in neutron-rich fluorine 23F was investigated using the in-beam γ-ray spectroscopy technique via the proton transfer reaction onto the 22O nucleus. We also measured the α inelastic scattering on 23F, the neutron knockout from 24F, and the two-nucleon knockout from 25Ne using a cocktail secondary beam. The excited states were identified by de-excitation γ-rays coincident with outgoing 23F, and we found the proton single-particle states at 2268 and 4059 keV by comparison of the population strengths among these reactions. These states were respectively assigned to have and by the angular distributions obtained in the transfer reaction, and therefore they were considered to have the configurations of and . The excitation energies of these states are located at higher excitation energies than the shell model predictions for the USD and SDPF-M interactions, which may indicate that the centroid energy gaps between and are wider than predictions. [Copyright &y& Elsevier]

Published
2007
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19. Nuclear reactions of 19,20C on a liquid hydrogen target measured with the superconducting TOF spectrometer

Author

Yamaguchi, T., Tanaka, K., Suzuki, T., Ozawa, A., Ohtsubo, T., Aiba, T., Aoi, N., Baba, H., Fukuda, M., Hashizume, Y., Inafuku, K., Iwasa, N., Izumikawa, T., Kobayashi, K., Komuro, M., Kondo, Y., Kubo, T., Kurokawa, M., Matsuyama, T., and Michimasa, S.

Subjects
*NUCLEAR reactions, *LIQUID hydrogen, *SUPERCONDUCTIVITY, *TIME-of-flight mass spectrometry, *RADIOACTIVE nuclear beams, *NUCLEAR fragmentation, *NUCLEAR matter, *CARBON isotopes
Abstract

Abstract: Reaction cross sections with various kinds of breakup channels for neutron-rich carbon isotopes 18–20C and for 9Be impinging on a liquid hydrogen target were investigated at 40 MeV/nucleon. The nuclides of interest were produced via projectile fragmentation from a 63 MeV/nucleon 40Ar beam and were separated in flight at the RIKEN projectile fragment separator (RIPS). The combination of the large-acceptance superconducting TOF spectrometer, TOMBEE (TOF Mass analyzer for exotic BEam Experiment), with a liquid hydrogen target, CRYPTA (CRYogenic ProTon and Alpha target system), enables simultaneous measurements of several reaction channels: the reaction cross sections (), individual elemental fragmentation cross sections (), charge-changing cross sections (), neutron-removal cross sections (), and charge-pickup cross sections () for 19,20C; , , and for 18C; and for 9Be. The present of 9Be on proton, , measured in the inverse kinematics, was consistent with the previous measurements using proton beams at different laboratories. The of 19C and 20C on proton were determined to be and , respectively. Taking into account the beam energy and target dependence of , the present are found to be considerably enhanced compared with those measured at around 1 GeV/nucleon. The appears to increase with the mass number of the projectiles, and it significantly contributes to in the present energy range. The finite-range optical-limit and few-body Glauber model analyses were performed for to study the nuclear matter density distributions and to derive the relative strength of the s-wave components of the valence neutrons in 19C and 20C. A neutron halo structure of 19C is confirmed with an s-wave dominance of the valence neutron when the effect of the charge-pickup reaction is taken into account. The large of 19C and of 20C also support the decoupled structures of 18C+n and 18C, respectively. The of 19C and 20C agree with each other within their experimental uncertainties, which might indicate a similar proton density distribution in 19C and 20C. The decreases monotonically without the even–odd effect as the number of removed protons increases. [Copyright &y& Elsevier]

Published
2011
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20. Isoscalar compressional strengths in 14O

Author

Baba, H., Shimoura, S., Minemura, T., Matsuyama, Y.U., Saito, A., Ryuto, H., Aoi, N., Gomi, T., Higurashi, Y., Ieki, K., Imai, N., Iwasa, N., Iwasaki, H., Kanno, S., Kubono, S., Kunibu, M., Michimasa, S., Motobayashi, T., Nakamura, T., and Sakurai, H.

Subjects
*MOTION, *PARTICLES (Nuclear physics), *KINEMATICS, *MECHANICAL movements
Abstract

Isoscalar monopole and dipole responses in unstable nucleus 14O have been studied for a wide excitation energy range by inelastic α scattering at 60 A MeV in inverse kinematics. In order to deduce isoscalar compressional strengths, the multipole decomposition analysis was carried out and the DWBA calculation for isoscalar excitation was studied. Result from the multipole decomposition analysis, isoscalar monopole and dipole strengths were identified corresponding to 63±12% and 109±15% of energy-weighted sum rule in , respectively, for the measured decay channels of , , , , and . [Copyright &y& Elsevier]

Published
2007
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21. Direct measurement of the astrophysical reaction 14O(α,p)17F

Author

Notani, M., Kubono, S., Teranishi, T., Yanagisawa, Y., Michimasa, S., Ue, K., He, J.J., Iwasaki, H., Baba, H., Tamaki, M., Minemura, T., Shimoura, S., Hokoiwa, N., Wakabayashi, Y., Sasaki, T., Fukuchi, T., Odahara, A., Gono, Y., Fülöp, Zs., and Lee, E.K.

Subjects
*ASTROPHYSICS, *ASTRONOMY, *NOBLE gases, *HELIUM
Abstract

The stellar reaction 14O(α,p)17F, that critically determines the onset of the high-temperature rp-process, has been studied through a direct measurement with a low-energy radioactive 14O beam and a gaseous helium target cooled down to 30 K. The reaction cross section was measured directly by means of a thick target technique in the energy range of Ec.m.(14O+α) = 0.8-3.8 MeV. The 14O(α,p)17F* reaction leading to the first excited state in 17F was clearly observed for the first time, suggesting an increase of about 50% for the stellar reaction rate through resonance at around 7.1 MeV in 18Ne. [Copyright &y& Elsevier]

Published
2004
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22. The first excited state of 30Ne studied by proton inelastic scattering in reversed kinematics

Author

Yanagisawa, Y., Notani, M., Sakurai, H., Kunibu, M., Akiyoshi, H., Aoi, N., Baba, H., Demichi, K., Fukuda, N., Hasegawa, H., Higurashi, Y., Ishihara, M., Iwasa, N., Iwasaki, H., Gomi, T., Kanno, S., Kurokawa, M., Matsuyama, Y.U., Michimasa, S., and Minemura, T.

Subjects
*PARTICLES (Nuclear physics), *LIQUID hydrogen, *LIQUEFIED gases, *NUCLEAR physics
Abstract

The energy of the first excited state in the very neutron-rich nucleus 30Ne was determined via proton inelastic scattering. A liquid hydrogen target was bombarded by a radioactive 30Ne beam, and energies of the de-excitation γ rays emitted from excited 30Ne nuclei were measured. The observed transition is likely to be the one from the first 2+ state to the ground state of 30Ne. The excitation energy, 791 (26) keV, is lower than that of 32Mg, indicating an enhancement of deformation as the neutron excess increases in the N = 20 isotones. [Copyright &y& Elsevier]

Published
2004
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25. Study of astrophysically important states in 26Si with the p(27Si,26Si*)d reaction and the p(25Al,p)25Al elastic scattering

Author

Chen, J., Chen, A.A., Schatz, H., Kubono, S., Reyes, A.B., Smith, A., Wales, B., Ouellet, C., Kahl, D., Redondo, D.G., Lorusso, G., LeNestour, J., Conca, J.P., Smith, K., Amthor, M., Matos, M., Yamaguchi, H., Iwasa, N., Hayakawa, S., and Michimasa, S.

Subjects
*NUCLEAR reactions, *SILICON isotopes, *ALUMINUM isotopes, *GAMMA decay, *ELASTIC scattering, *NUCLEAR excitation, *NUCLEAR astrophysics
Abstract

Abstract: The astrophysically important states in 26Si have been studied with different reactions because of their dominant contribution to the 25Al(p,γ)26Si reaction rate at nova temperatures. We performed two different experiments to study the states of interest in 26Si, with the aim of reducing the main uncertainty in the current 25Al(p,γ)26Si rate by determining the level parameters of the dominant states more accurately. One is the p(27Si,26Si*)d experiment at NSCL, in which we measured the gamma-ray decays from the excited states in 26Si. The other one is the 25Al+p elastic scattering experiment with CRIB at RIKEN. [Copyright &y& Elsevier]

Published
2010
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