THE ISOTOPIC COMPOSITION OF COSMIC-RAY-B, COSMIC-RAY-C, COSMIC-RAY-N, AND COSMIC-RAY-O - EVIDENCE FOR AN OVERABUNDANCE OF O-18

被引：22
|
作者：
GIBNER, PS [1 ]
MEWALDT, RA [1 ]
SCHINDLER, SM [1 ]
STONE, EC [1 ]
WEBBER, WR [1 ]
机构：
[1] NEW MEXICO STATE UNIV,DEPT ASTRON,LAS CRUCES,NM 88003
来源：
ASTROPHYSICAL JOURNAL | 1992年 / 391卷 / 02期
关键词：
COSMIC RAYS GALAXY; ABUNDANCES;
D O I：
10.1086/186405
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
New observations of galactic cosmic rays at higher energies (approximately 400-780 MeV nucleon-1) than obtained in previous direct mass measurements have resulted in determinations of the isotopic composition of B, C, N, and O. The derived cosmic-ray source abundances provide evidence for an enhancement of O-18/O-16 by a factor of 5.6 +/- 1.9 over the solar system value and give a C-13/C-12 ratio consistent with the solar system abundance ratio, but lower than some recent measurements of the local interstellar medium.
引用
收藏
页码：L89 / L92
页数：4
相关论文
共 50 条
  • [1] THE ISOTOPIC COMPOSITION OF COSMIC-RAY B,C,N, AND O NUCLEI
    MEWALDT, RA
    SPALDING, JD
    STONE, EC
    VOGT, RE
    ASTROPHYSICAL JOURNAL, 1981, 251 (01): : L27 - L31
  • [2] ISOTOPIC COMPOSITION OF GALACTIC COSMIC-RAY BERYLLIUM AND COSMIC-RAY AGE
    GARCIAMUNOZ, M
    MASON, GM
    SIMPSON, JA
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1977, 22 (04): : 567 - 567
  • [3] ISOTOPIC COMPOSITION OF COSMIC-RAY NUCLEI
    ENGE, W
    NUCLEAR INSTRUMENTS & METHODS, 1977, 147 (01): : 211 - 220
  • [4] Cosmic ray acceleration in superbubbles and the composition of cosmic rays
    Lingenfelter, RE
    Higdon, JC
    Ramaty, R
    ACCELERATION AND TRANSPORT OF ENERGETIC PARTICLES OBSERVED IN THE HELIOSPHERE, 2000, 528 : 375 - 382
  • [5] Interpreting the cosmic ray composition
    Drury, LO
    Ellisson, DC
    Meyer, JP
    NUCLEAR PHYSICS A, 2000, 663 : 843C - 846C
  • [6] COSMIC RAY LI, BE AND B
    DAMLE, SV
    WEBBER, WR
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1971, 16 (04): : 597 - &
  • [7] A METHOD TO DETERMINE ISOTOPIC COMPOSITION OF COSMIC RAY CARBON
    JONSSON, G
    KRISTIANSSON, K
    MALMQVIST, L
    NUCLEAR INSTRUMENTS & METHODS, 1970, 84 (02): : 282 - +
  • [8] ON ISOTOPIC COMPOSITION OF PRIMARY COSMIC-RAY NUCLEI
    LUND, N
    PETERS, B
    COWSIK, R
    PAL, Y
    PHYSICS LETTERS B, 1970, B 31 (08) : 553 - &
  • [9] ISOTOPIC COMPOSITION OF COSMIC-RAY BORON AND NITROGEN
    KROMBEL, KE
    WIEDENBECK, ME
    ASTROPHYSICAL JOURNAL, 1988, 328 (02): : 940 - 953
  • [10] RESULTS ON ISOTOPIC COMPOSITION OF COSMIC-RAY BERYLLIUM
    HAGEN, FA
    FISHER, AJ
    ORMES, JF
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1975, 20 (04): : 710 - 710
12345