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Changes in the annihilation delay time distribution of stopped antiprotons in helium gas, due to contaminants. — II

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Il Nuovo Cimento A (1971-1996)

Summary

A different type of analysis was performed to study the effect of contaminants on the temporal distribution of delayed annihilations of antiprotons stopped in helium gas, with respect to some first results published in Ableevet. al. (Nuovo Cimento A,107 (1994) 1325). A more objective criterion was established to single out aslow part in the total delayed component, in order to deduce from this, for each case, the mean value of the product\((\overline {v\sigma } )_{c, l} \) of the quenching cross-section and the mean velocity of contaminant molecules, and the fraction of the slow componentη c, l . The fractionη c, l was found to be amazingly stable for each impurity, independent of the concentration: around 79% of the total delayed component for all the atomic impurities (Ar, Ne, Xe) and 64% for the molecular ones (H2, N2).

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References

  1. Adamo A. et al., Nucl. Phys. A,558 (1993) 665c.

    Article  ADS  Google Scholar 

  2. Bertin A. et al., Nuovo Cimento A,109 (1996) 1505.

    Article  ADS  Google Scholar 

  3. Iwasaki M. et al., Phys. Rev. Lett.,67 (1991) 1246.

    Article  ADS  MathSciNet  Google Scholar 

  4. Widmann E. et al., Phys. Rev. A,53 (1996) 3129.

    Article  ADS  Google Scholar 

  5. Yamazaki T. et al., Nature,361 (1993) 238.

    Article  ADS  Google Scholar 

  6. Margagliotti G. V., On time distribution of late annihilations following stopping antiprotons in 4He gas contaminated with impurities, in 6th Workshop on Exotic Atoms, Molecules and their Interactions, Erice 21-30 March 1994, INFN/AE-94/24, p. 173.

  7. Condo G. T.,Phys. Lett.,9 (1964) 65.

    Article  ADS  Google Scholar 

  8. Ableev V. G. et al., Nuovo Cimento A,107 (1994) 1325.

    Article  ADS  Google Scholar 

  9. Adamo A. et al., Yad. Fiz.,55 (1992) 3009, where a detailed description of the OBELIX apparatus can be found.

    Google Scholar 

Download references

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Authors and Affiliations

  1. Dipartimento di Fisica, Università di Bologna INFN, Sezione di Bologna, I- 40100, Bologna, Italy

    A. Bertin, M. Bruschi, I. D’Antone, S. De Castro, A. Ferretti, D. Galli, B. Giacobbe, U. Marconi, M. Piccinini, N. Semprini Cesari, R. Spighi, S. Vecchi, A. Vezzani, F. Vigotti, M. Villa, A. Vitale & A. Zoccoli

  2. Dipartimento di Elettronica per l’Automazione, Università di Brescia INFN, Sezione di Torino, Torino, Italy

    M. Corradini, A. Donzella, E. Lodi Rizzini & L. Venturelli

  3. Dipartimento di Elettronica per l’Automazione, Università di Brescia INFN, Sezione di Pavia —, Pavia, Italy

    A. Zenoni

  4. Dipartimento di Scienze Fisiche, Università di Cagliari INFN, Sezione di Cagliari, Cagliari, Italy

    C. Cicaló, A. Masoni, G. Puddu, S. Serci, P. Temnikov & G. Usai

  5. Joint Institute for Nuclear Research-Dubna, SU-101000, Moscow, Russia

    V. G. Ableev, O. Yu. Denisov, O. E. Gorchakov, S. N. Prakov, A. M. Rozhdestvenski, M. G. Sapozhnikov & V. I. Tretyak

  6. Laboratori Nazionali di Frascati dell’INFN, I-00044, Frascati, Italy

    P. Gianotti, C. Guaraldo, A. Lanaro, V. Lucherini, F. Nichitiu, C. Petrascu & A. Rosca

  7. Laboratori Nazionali di Legnaro dell’INFN, I-35020, Legnaro Padova, Italy

    C. Cavion, U. Gastaldi & M. Lombardi

  8. PN Lebedev Physics Institute, Moscow, Russia

    A. Voronin

  9. Dipartimento di Fisica, Università di Padova INFN, Sezione di Padova, I-10125, Padova, Italy

    M. Morando

  10. Dipartimento di Fisica, Università di Padova INFN, Sezione di Padova, I-10125, Padova, Italy

    R. A. Ricci

  11. Laboratori Nazionali di Legnaro dell’INFN, I-35020, Legnaro, Padova, Italy

    R. A. Ricci

  12. Dipartimento di Fisica Nucleare e Teorica, Università di Pavia INFN, Sezione di Pavia, I-27100, Pavia, Italy

    G. Bendiscioli, V. Filippini, A. Fontana, P. Montagna, A. Rotondi, A. Saino & P. Salvini

  13. Politecnico di Torino INFN, Sezione di Torino, I-10125, Torino, Italy

    M. Agnello, F. Iazzi & B. Minetti

  14. Dipartimento di Fisica, Università di Torino INFN, Sezione di Torino, I-10125, Torino, Italy

    F. Balestra, E. Botta, T. Bressani, M. P. Bussa, L. Busso, D. Calvo, P. Cerello, S. Costa, F. D’isep, L. Fava, A. Feliciello, L. Ferrero, A. Filippi, R. Garfagnini, A. Grasso, A. Maggiora, S. Marcello, D. Panzieri, D. Parena, E. Rossetto & F. Tosello

  15. Dipartimento di Fisica, Università di Trieste INFN, Sezione di Trieste, I-34127, Trieste, Italy

    G. V. Margagliotti, G. Pauli, C. Rizzo, S. Tessaro & E. Zavattini

  16. Dipartimento di Fisica, Università di Udine INFN, Sezione di Trieste, I-34127, Trieste, Italy

    L. Santi

Authors
  1. A. Bertin
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  2. M. Bruschi
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  3. I. D’Antone
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  15. M. Villa
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  16. A. Vitale
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  18. M. Corradini
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  22. A. Zenoni
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  23. C. Cicaló
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  24. A. Masoni
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  33. A. M. Rozhdestvenski
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  34. M. G. Sapozhnikov
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  80. G. V. Margagliotti
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Bertin, A., Bruschi, M., D’Antone, I. et al. Changes in the annihilation delay time distribution of stopped antiprotons in helium gas, due to contaminants. — II. Il Nuovo Cimento A (1971-1996) 110, 419–428 (1997). https://doi.org/10.1007/BF03035891

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  • DOI: https://doi.org/10.1007/BF03035891

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