Skip to main content
SpringerLink
Log in

On ternary fission induced by high-energy protons

О тройном делении, индуцированном протонами высокой энергии

  • Published:
Il Nuovo Cimento A (1965-1970)

Summary

Uranium was irradiated with high-energy protons: 600 MeV. 2.9 GeV, 12.3 GeV and 21.8 GeV. Through the use of nuclear emulsions as detectors, three-prong events with cross-sections of (1.2±0.1) mb, (2.2±0.1) mb, (4.8±0.8) mb and (6.5±1.2) mb, respectively, were found, along with the usual fission tracks. Our results show that as well as a true ternary fission process, a variety of other phenomena exist which can produce three-prong events and must be taken carefully into account.

Riassunto

Si è irradiato l'uranio con protoni di alta energia: 600 MeV, 2.9 GeV, 12.3 GeV e 21.8 GeV. Adoperando le emulsioni nucleari come rivelatori si sono trovati eventi a tre rami con sezioni d'urto di (1.2±0.1) mb, (2.2±0.1) mb, (4.8±0.8) mb e (6.5±1.2) mb, rispettivamente, assieme alle solite tracce di fissione. I nostri risultati mostrano che, oltre un vero processo di fissione ternario, esiste una varietà di altri fenomeni che possono produrre eventi a tre rami e che devono essere tenuti accuratamente in conto.

Резюме

Уран облучается протонами высокой энергии: 600 МэВ, 2.9 ГэВ, 12.3 ГэВ и 21.8 ГэВ. Используя ядерные эмульсии как детекторы, были обли обнаружены трех-лучевые события с сечениями соответственно (1.2±0.1) мб, (2.2±0.1) мб, (4.8±0.8) мб и (6.5±1.2) мб, вдоль обычных треков деления. Наши результаты показывают, что кроме истинного процесса тройного деления, существует многообразие других явлений, которые могут образовывать трех-лучевые события и которые должны быть внимательно рассмотрены.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. R. Brandt, F. Carbonara, E. Ciéllak, M. Dakowski, Ch. Gfeller, H. Piekarz, J. Piekarz, W. Riezler, R. Rinzivillo, E. Sassi, M. Sowinski andJ. Zakrzewski:Nucl. Phys.,90 A, 177 (1967).

    Article  ADS  Google Scholar 

  2. M. Debeauvais, R. Stein, J. Ralarosy andP. Cuer:Nucl. Phys.,90A, 186 (1967).

    Article  ADS  Google Scholar 

  3. J. Hudis andS. Katcoff:Phys. Rev.,180, 1122 (1969).

    Article  ADS  Google Scholar 

  4. R. Brandt, F. Carbonara, E. Ciéslak, I. Jarstorff, J. Piekarz, R. Rinzivillo andJ. Zakrzewski:Journ. de Phys.,31, 21 (1970).

    Article  Google Scholar 

  5. G. Remy, J. Ralarosy, R. Stein, M. Debeauvais andJ. Tripier:Journ. de Phys.,31, 27 (1970);Nucl. Phys.,163 A, 583 (1971).

    Article  Google Scholar 

  6. H. G. de Carvalho andA. G. da Silva:Suppl. Nuovo Cimento,19, 24 (1961).

    Article  Google Scholar 

  7. G. B. Baptista: Thesis 02-70, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro (1970).

  8. R. A. M. S. Nazareth: Thesis 12–71, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro (1971).

  9. Tsien San Tsiang, R. Chastel, Ho Zah-Wei andL. Vigeron:Compt. Rend.,223, 986 (1946);Nature,159, 773 (1947).

    Google Scholar 

  10. L. Rosen andA. M. Hudson:Phys. Rev.,78, 533 (1950).

    Article  ADS  Google Scholar 

  11. N. A. Perfilov:Physics of Nuclear Fission, Chap. 7 (New York, 1958), p. 84.

  12. J. C. Roy:Can. Journ. Phys.,39, 315 (1961).

    Article  ADS  Google Scholar 

  13. E. K. Hyde:The Nuclear Properties of the Heavy Elements.—Vol. III:Fission Phenomena (Englewood Cliffs, N. J., 1964), p. 131.

  14. M. L. Muga:Symposium on the Physics and Chemistry of Fission, Vol.2 (Vienna, 1965), p. 409.

    MATH  Google Scholar 

  15. R. L. Fleischer, P. B. Price, R. M. Walker andE. L. Hubbard:Phys. Rev.,143, 943 (1966).

    Article  ADS  MATH  Google Scholar 

  16. R. W. Stoenner andM. Hillman:Phys. Rev.,142, 716 (1966).

    Article  ADS  Google Scholar 

  17. R. H. Iyer andJ. W. Cobble:Phys. Rev. Lett.,17, 541 (1966).

    Article  ADS  Google Scholar 

  18. K. W. McMurdo andJ. W. Cobble:Phys. Rev. Lett.,182, 1303 (1968).

    Google Scholar 

  19. V. P. Perelygin, S. P. Tretiakova, N. H. Shadieva, A. H. Boos andR. Brandt:Nucl. Phys.,127 A, 577 (1969).

    Article  ADS  MATH  Google Scholar 

  20. N. Feather:Symposium on the Physics and Chemistry of Fission (Vienna, 1969), p. 83.

  21. R. Wolfgang, E. W. Baker, A. A. Caretto, J. B. Cumming, G. Friedlander andJ. Hudis:Phys. Rev.,103, 394 (1956).

    Article  ADS  Google Scholar 

  22. V. P. Crespo, J. M. Alexander andE. K. Hyde:Phys. Rev.,131, 1765 (1963).

    Article  ADS  Google Scholar 

  23. J. B. Cumming, R. J. Cross Jr.,J. Hudis andA. M. Poskanzer:Phys. Rev.,134, B 167 (1964).

    Article  ADS  Google Scholar 

  24. I. Dostrovsky, R. Davis jr.,A. M. Poskanzer andP. L. Reeder:Phys. Rev.,139, B 1513 (1965).

    Article  ADS  Google Scholar 

  25. A. Juliano andN. T. Porile:Journ. Inorg. Nucl. Chem.,29, 2859 (1967).

    Article  Google Scholar 

  26. J. Hudis andS. Tanaka:Phys. Rev.,171, 1297 (1968).

    Article  ADS  Google Scholar 

  27. J. Hudis:Phys. Rev.,171, 1301 (1968).

    Article  ADS  Google Scholar 

  28. J. Hudis, T. Kirsten, R. W. Soenner andO. A. Schaeffer:Phys. Rev. C,1, 2019 (1970).

    Article  ADS  Google Scholar 

  29. A. M. Poskanzer, G. W. Butler andE. K. Hyde:Phys. Rev. C,3, 882 (1971).

    Article  ADS  Google Scholar 

  30. J. M. Alexander, C. Baltzinger andM. F. Gazdik:Phys. Rev.,129, 1826 (1963).

    Article  ADS  Google Scholar 

  31. G. Friedlander:Symposium on the Physics and Chemistry of Fission (Vienna, 1965), p. 265.

  32. J. A. Panontin andN. T. Porile:Journ. Inorg. Nucl. Chem.,32, 1775 (1970).

    Article  MATH  Google Scholar 

  33. V. P. Crespo, J. B. Cumming andJ. M. Alexander:Phys. Rev. C,2, 1777 (1970).

    Article  ADS  Google Scholar 

  34. K. Beg andN. T. Porile:Phys. Rev. C,3, 1631 (1971).

    Article  ADS  Google Scholar 

  35. N. A. Perfilov, O. V. Lozhkin andV. P. Shamov:Sov. Phys. Usp.,3, 1 (1960).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Centro Brasileiro de Pesquísas Físicas, Rio de Janeiro

    H. G. de Carvalho & H. Schechter

Authors
  1. H. G. de Carvalho
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. H. Schechter
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

To speed up publication, the authors of this paper have agreed to not receive the proofs for correction.

Work supported by the Brazilian Conselho Nacional de Pesquísas, Comissão Nacional de Energia Nuclear and Banco Nacional do Desenvolvimento Econômico.

Traduzione a cura della Redazione.

Перевебено ребакцией.

Rights and permissions

Reprints and permissions

About this article

Cite this article

de Carvalho, H.G., Schechter, H. On ternary fission induced by high-energy protons. Nuov Cim A 16, 102–110 (1973). https://doi.org/10.1007/BF02785518

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02785518

Search

Navigation