Abstract
The spectrum of Ar ions in anomalous cosmic rays in the energy range 14–42 MeV/nucleon was measured in the PLATAN-5 experiment at the Mir space station in 1994–1997. The spectrum is analyzed along with the data obtained by the SIS instrument on the ACE spacecraft in the circumterrestrial space. On the basis of the comparison of the spectra recorded within and beyond the magnetosphere, the average effective charge of ACR argon ions has been estimated. The estimate obtained is much larger than unity at energies exceeding 22 MeV/nucleon. The ion charge gradually increases with an increase in energy and reaches the value Q = 4 at an energy of 38 MeV/nucleon.
Similar content being viewed by others
References
Klecker, B. et al., Space Sci. Rev., 1998, vol. 83, p. 259.
Panasyuk, M.I., http://www.kosmofizika.ru/avtor.htm#RAN.
Stone, E.C., Cummings, A.C., McDonald, F.B., et al., Science, 2005, vol. 309, p. 2017.
Reames, D.V., Astrophys. J., 1999, vol. 518, p. 473.
Mazur, J.E., Mason, G.M., Blake, J.B., et al., Abstracts of Papers, 26th ICRC, Salt Lake City, 1999, vol. 7, p. 527.
Christian, E.R., Cohen, C.M.S., Cummings, A.C., et al., Abstracts of Papers, 26th ICRC, Salt Lake City, 1999, vol. 7, p. 559.
Mewaldt, R.A., Selesnick, R.S., Cummings, J.R., et al., Astrophys. J., 1996, vol. 466, no. 1., Part 2, p. L43.
Klecker, B., Oetliker, M., Blake, J.B., et al., Abstracts of Papers, 25th ICRC, Durban, 1997, vol. 2, p. 273.
Baranov, D.G., Gagarin, Yu.F., Dergachev, V.A., et al., Geomagn. Aeron., 2004, vol. 44, no. 6, p. 771 [Geomagn. Aeron. (Engl. Transl.), vol. 44, no. 6, p. 711].
Fleischer, R.L., Price, P.B., Walker, R.M., et al., Nuclear Tracks in Solids, Berkeley: Univ. of California Press, 1975, p. 135.
Leske, R.A., Mewaldt, R.A., Selesnick, R.S., et al., Abstracts of Papers, 26th ICRC, Salt Lake City, 1999, vol. 7, p. 516.
Selesnick, R.S., Mewaldt, R.A., Cummings, J.R., et al., Abstracts of Papers, 25th ICRC, Durban, 1997, vol. 2, p. 269.
Ostryakov, V.M., Stovpyuk, M.F., and Shevel’ko, V.P., Astron. Zh., 2004, vol. 81, no. 4, p. 375 [Astron. Rep. (Engl. Transl.), vol. 81, no. 4, p. 342].
Cummings, A.C., Stone, E.C., and Steenberg, C.D., Abstracts of Papers, 26th ICRC, Salt Lake City, 1999, vol. 7, p. 531.
Stone, E.C. and Cummings, A.C., Abstracts of Papers, 26th ICRC, Salt Lake City, 1999, vol. 7, p. 500.
Author information
Authors and Affiliations
Additional information
Original Russian Text © D.G. Baranov, Yu.F. Gagarin, V.A. Dergachev, R.A. Nymmik, 2007, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2007, Vol. 71, No. 7, pp. 1011–1014.
About this article
Cite this article
Baranov, D.G., Gagarin, Y.F., Dergacheva, V.A. et al. Evidence for existence of multiply charged argon ions in anomalous cosmic rays. Bull. Russ. Acad. Sci. Phys. 71, 980–983 (2007). https://doi.org/10.3103/S106287380707026X
Issue Date:
DOI: https://doi.org/10.3103/S106287380707026X