Further measurement of the $^7$Be(p,$\gamma$)$^8$B cross section at low energies with the coulomb dissociation of $^8$B

T. Kikuchi - et al.

doi:doi:10.1007/s100500050170

EPJ

Further measurement of the ⁷Be(p, $\gamma$ )⁸B cross section at low energies with the coulomb dissociation of ⁸B

T. Kikuchi¹ - T. Motobayashi¹ - N. Iwasa² - Y. Ando¹ - M. Kurokawa² - S. Moriya¹ - H. Murakami¹ - T. Nishio¹ - J. Ruan (Gen)¹ - S. Shirato¹ - S. Shimoura¹ - T. Uchibori¹ - Y. Yanagisawa¹ - T. Kubo² - H. Sakurai² - T. Teranishi² - Y. Watanabe² - M. Ishihara^2.3 - M. Hirai³ - T. Nakamura³ - S. Kubono⁴ - M. Gai^5,6 - R.H. France III⁶ - K.I. Hahn² - Th. Delbar⁷ - P. Lipnik⁷ - C. Michotte⁷

¹ Department of Physics, Rikkyo University, 3 Nishi-Ikebukuro, Toshima, Tokyo 171, Japan
² RIKEN (Institute of Physical and Chemical Research), Hirosawa, Wako, Saitama 351-01, Japan
³ Department of Physics, University of Tokyo, Hongo, Bunkyo, Tokyo 113, Japan
⁴ Center for Nuclear Study (CNS), University of Tokyo, Tanashi, Tokyo 188, Japan
⁵ Department of Physics, U46, University of Connecticut, 2152 Hillside Rd., Storrs, CT 06269-3046, USA
⁶ A.W. Wright Nucl. Structure Lab., Department of Physics, Yale University, New Haven, CT 06511, USA
⁷ Institut de Physique Nucléaire, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium

Received: 15 August 1998 Communicated by P. Kienle

Abstract
We have measured the dissociation of ⁸B in the Coulomb field of ²⁰⁸Pb at $E_{\rm in}$ =51.9 MeV/nucleon and extracted the cross section of the ⁷Be(p, $\gamma$ )⁸B reaction at 0.4 $\leq E_{\rm rel} \leq$ 3 MeV, which is of importance for the ⁸B solar-neutrino production rate. The extracted astrophysical S₁₇ factors are consistent with our earlier Coulomb dissociation measurement, and agree with the values deduced from the direct capture measurements by Filippone et al., Vaughn et al. and Hammache et al. The S factor at zero energy was extracted to be 18.9 $\pm$ 1.8 eV-b with the help of theoretical energy-dependence.

PACS
25.40.Lw Radiative capture - 35.60.-t Reactions induced by unstable nuclei - 25.70.De Coulomb excitation - 25.70.Mn Projectile and target fragmentation - 26.65.+t Solar neutrinos

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Further measurement of the 7Be(p,)8B cross section at low energies with the coulomb dissociation of 8B

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Further measurement of the ⁷Be(p, $\gamma$ )⁸B cross section at low energies with the coulomb dissociation of ⁸B