The cross section of

M. Junker, C. Arpesella, E. Bellotti, C. Broggini, P. Corvisiero, A. D'Alessandro, G. Fiorentini, A. Fubini, G. Gervino, U. Greife, C. Gustavino, J. Lambert, P. Prati, W.S. Rodney, C. Rolfs, H.P. Trautvetter, S. Zavatarelli

Research output: Contribution to journalArticle

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We report on the status of the3He(3He,2p)4He experiment at the underground accelerator facility LUNA (Gran Sasso). The lowest projectile energies for the measured cross section correspond already to energies below the center of the solar Gamow peak (E0=22 keV). The data provide no evidence for the existence of a hypothetical resonance in the energy range investigated. Although no extrapolation is needed anymore (except for energies at the low-energy tail of the Gamow peak), the data must be corrected for the effects of electron screening, clearly observed the first time for the3He(3He,2p)4He reaction. The effects are however larger than expected and not understood, leading presently to the largest uncertainty on the quoted S(0) value for bare nuclides (= 5.40 MeVb).
Original languageEnglish
Pages (from-to)382 - 385
Number of pages4
JournalNuclear Physics B - Proceedings Supplements
Issue number1-3
Publication statusPublished - 1999
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

Cite this

Junker, M., Arpesella, C., Bellotti, E., Broggini, C., Corvisiero, P., D'Alessandro, A., ... Zavatarelli, S. (1999). The cross section of. Nuclear Physics B - Proceedings Supplements, 70(1-3), 382 - 385.