Precision measurements of the [sup 7]Be(p,γ)[sup 8]B reaction with radioactive beams and the [sup 8]B solar neutrino flux

Gai, Moshe
July 2000
AIP Conference Proceedings;2000, Vol. 529 Issue 1, p126
Academic Journal
The [sup 7]Be(p,γ)[sup 8]B reaction is one of the major source of uncertainties in estimating the [sup 8]B solar neutrino flux and is critical for understanding the Solar Neutrino Problem and neutrinos. The main source of uncertainty is the existence of conflicting data with different absolute normalization. Attempts to measure this reaction rate with [sup 7]Be beams are under way by the UConn-LLN collaboration, and we discuss a newly emerging method to extract this cross section from the Coulomb dissociation of the radioactive beam of [sup 8]B. We discuss some of the issues relevant for this study including the question of the E2 contribution to the Coulomb dissociation process which was measured to be small. The Coulomb dissociation appears to provide a viable alternative method for measuring the [sup 7]Be(p,γ)[sup 8]B reaction rate, with a weighted average of the RIKEN1, RIKEN2 and GSI1 published results of S[sub 17](0)=19.4±1.3 eV-b. © 2000 American Institute of Physics.


Related Articles

  • Radioactive beam diagnostics status and development at the spiral facility. Chautard, F.; Baelde, J. L.; Bucaille, F.; Duneau, P.; Galard, C.; Le Blay, J. P.; Loyant, J. M.; Martina, L.; Ulrich, M.; Laune´, B. // AIP Conference Proceedings;2001, Vol. 600 Issue 1, p370 

    In 2001 the first radioactive beam will be accelerated in the CIME cyclotron of the SPIRAL project at GANIL. In order to be able to tune such low intensity beams in the cyclotron (down to few particles per second), a silicon and a scintillator detectors are mounted on probes. They measure the...

  • The Oak Ridge Isochronous Cyclotron: Enhancements to ORNL’s HRIBF driver accelerator. Tatum, B. Alan; Beene, James R.; Dowling, Darryl T. // AIP Conference Proceedings;2001, Vol. 600 Issue 1, p148 

    The Oak Ridge Isochronous Cyclotron, ORIC, serves as the driver accelerator for the production of radioactive ion beams (RIBs) at the Holifield Radioactive Ion Beam Facility (HRIBF). ORIC has served the physics community for almost 40 years as first a light ion accelerator, then as an energy...

  • Neon gas target for the production of radioactive fluorine beams Decrock, P.; Nolen, J.A.; Nolen, J. A. // Review of Scientific Instruments;Jan1998, Vol. 69 Issue 1, p323 

    Develops a neon gas target for the production of radioactive fluorine beams. Addition of chlorine tetrafluoride to the neon gas; Correlation between recovery efficiency of [sup 18] fluorine-labeled chlorine tetrafluoride and impurity level; Total extraction time of radioactivity; Implication...

  • Radioactive beams: A technique on target. Gelletly, Bill // New Scientist;10/9/93, Vol. 140 Issue 1894, p42 

    Focuses on research concerning radioactive beams. Creation of radioactive ion beams; Two-stage process in production of most intense beams; Key component as ion source/target system between two accelerators involving complex chemistry, metallurgy and engineering; Proton accelerator ISIS at the...

  • Development of an RF ion guide for trapping energetic radioactive nuclear ions. Wada, M.; Ishida, Y.; Nakamura, T.; Oshima, N.; Nakai, Y.; Kojima, T. M.; Kanai, Y.; Ohyama, H.; Kambara, T.; Yamazaki, Y.; Yoshida, A.; Kubo, T.; Matsuo, Y.; Fukuyama, Y.; Okada, K.; Noda, K.; Ohtani, S.; Kawakami, H.; Katayama, I. // AIP Conference Proceedings;2002, Vol. 606 Issue 1, p625 

    Although the projectile fragment separator (RIPS) at the RIKEN accelerator facility (RARF) provides wide variety of energetic radioactive beams, it is not adequate for low energy beam experiments such as precision spectroscopy of trapped ions. Aiming for an efficient deceleration and cooling of...

  • Half-life determination of [sup 44]Ti using radioactive beam technique. Fu¨lo¨p, Zs.; Wakasaya, Y.; Bordeanu, C.; Golovkov, M.; Goswami, R.; Kato, T.; Kimura, K.; Kudo, H.; Mochizuki, Y.; Otsu, H.; Ozawa, A.; Petrascu, H.; Sakurai, H.; Suzuki, T.; Tanihata, I.; Yoshida, K.; Boyd, R. N.; Krasznahorkay, A.; Somorjai, E. // AIP Conference Proceedings;2000, Vol. 529 Issue 1, p684 

    An absolute method based on radioactive beam implantation was developed to determine half-lives around 100 y. The method was applied to the case of [sup 44]Ti, because its astrophysical impact. Our preliminary half-life value for the [sup 44]Ti is 62.1±1.6y. The relative error of this method...

  • Research with radioactive beams at ORNL. Liang, J. F. // AIP Conference Proceedings;2001, Vol. 576 Issue 1, p273 

    Radioactive [sup 17]F and [sup 18]F beams have been produced at the HRIBF using the ISOL technique. The beams were postaccelerated by the 25 MV tandem accelerator. Experiments were carried out to search for F(p,p) resonances, measure F(p,α) reaction rates, study two-proton decay from [sup...

  • The production and generation of radioactive beams at Louvain-la-Neuve. Loiselet, M.; Cogneau, M.; Colson, J. M.; Gaelens, M.; Postiau, N.; Ryckewaert, G. // AIP Conference Proceedings;2001, Vol. 576 Issue 1, p269 

    Recent development work on various aspects of the generation of Radioactive Ion Beams at Louvain-la-Neuve is reported. The performances of CYCLONE44, the new isochronous cyclotron designed for the combined acceleration and isobaric separation of RIB at low energy are discussed. The results...

  • Beryllium (Boron) Clustering Quest in Relativistic Multifragmentation (BECQUEREL Project). Bradnova, V.; Chernyavsky, M.M.; Just, L.; Kharlamov, S.P.; Kovalenko, A.D.; Haiduc, M.; Kotel'nikov, K.A.; Krasnov, V.A.; Larionova, V.G.; Lepekhin, F.G.; Malakhov, A.I.; Orlova, G.I.; Peresadko, N.G.; Polukhina, N.G.; Rukoyatkin, P.A.; Rusakova, V.V.; Salmanova, N.A.; Simonov, B.B.; Vokal, S.; Zarubin, P.L. // Physics of Atomic Nuclei;Sep2003, Vol. 66 Issue 9, p1646 

    A physical program of irradiation of emulsions in beams of relativistic nuclei named the BECQUEREL Project is reviewed. It is destined to study in detail the processes of relativistic fragmentation of light radioactive and stable nuclei. The expected results would make it possible to answer some...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics