Naruhito Iwasa

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We have measured the Coulomb dissociation of 8B into 7Be and proton at 254 MeV/nucleon using a large-acceptance focusing spectrometer. The astrophysical S17 factor for the 7Be(p,γ)8B reaction at Ec.m. = 0.25−2.78 MeV is deduced yielding S17(0) = 20.6± 1.2 (exp.) ± 1.0 (theo.) eV-b. This result agrees with the presently adopted zero-energy S17 factor(More)
Al complexes containing phenoxy-imine ligands of type, Me2Al[O-2-R1-6-(R2N=CH)C6H3] [R1 = Me, R2 = 2,6-iPr2C6H3 (1a), tBu (1b); R1 = tBu, R2 = 2,6-iPr2C6H3 (2a), tBu (2b), cyclohexyl (2c), adamantyl (2d), C6H5 (2e), 2,6-Me2C6H3 (2f), C6F5 (2g)] have been prepared in high yields from AlMe3 by treating with 1.0 equiv. of 2-R1-6-(R2N=CH)C6H3OH in n-hexane.(More)
A new method for the formation of conjugated polyynes has been developed based on both the rearrangement of vinylidenes to alkynes and the [2+1] cheletropic fragmentation of dialkynylmethylenebicyclo[4.3.1]deca-1,3,5-triene derivatives. A model study of the photolysis of simple dialkynylmethylenebicyclo[4.3.1]deca-1,3,5-trienes resulted in cheletropic(More)
MOCADI, the Monte-Carlo code for tracking of ions in ion-optical systems with non-Liouvillian elements, has been extended. New event generators for targets were added besides projectile fragmentation. General twobody kinematics with possible excitation energy of target and projectile nucleus and nuclear fission with different parametrizations of the total(More)
H. Weick , D. Cortina-Gil , J. Enders , F. Farinon , H. Geissel , M. Holl , N. Iwasa , R. Janík , P. Maierbeck , C. Nociforo , A. Prochazka , C. Rodriguez-Tajes , H. Simon , B. Sitar , P. Strme , K. Sümmerer , V. Volkov , J. S. Winfield 1 GSI, Darmstadt, Germany; Universidad de Santiago de Compostela, Spain; TU Darmstadt, Germany; Tohoku University, Sendai,(More)
Knockout of single nucleons from fast beams allows one to investigate the single-particle structure of nuclei, in particular for rare isotopes, see Refs. [1,2]. It has been argued [3] that nucleon knockout reactions provide access to spectroscopic factors even on an absolute scale. Measured spectroscopic factors C2exp are smaller than those predicted within(More)
M. Holl1, T. Aumann2, D. Cortina-Gil3, J. Enders1, F. Farinon2, H. Geissel2, N. Iwasa5, R. Janik6, R. Krücken4, P. Maierbeck4, C. Nociforo2, A. Prochazka2, C. Rodriguez-Tajes3, H. Simon2, B. Sitar6, P. Strmen6, K. Sümmerer2, V. Volkov1, H. Weick2, and J. Winfield2 1Technische Universität Darmstadt, Germany; 2GSI, Darmstadt, Germany; 3Universidad de Santiago(More)
V. Volkov†1, T. Aumann2, J. Enders1, F. Farinon2, H. Geissel2, M. Holl1, N. Iwasa5, R. Janik6, R. Krucken4, P. Maierbeck4, C. Nociforo2, A. Prochazka2, C. Rodriguez-Tajes3, H. Simon2, B. Sitar6, P. Strmen6, K. Summerer2, H. Weick2, and J. Winfield2 1Technische Universitat Darmstadt, Germany; 2GSI, Darmstadt, Germany; 3Universidad de Santiago de Compostela,(More)
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