The cosmic-ray He-3/He-4 ratio from 200 MeV per nucleon(-1) to 3.7 GeV per nucleon(-1)

O. Reimer; W. Menn; M. Hof; M. Simon; A.J. Davis; A.W. Labrador; R.A. Mewaldt; S.M. Schindler; L.M. Barbier; E.R. Christian; K.E. Krombel; J.W. Mitchell; J.F. Ormes; R.E. Streitmatter; R.L. Golden; S.J. Stochaj; W.R. Webber; Ib Lundgaard Rasmussen

The cosmic-ray He-3/He-4 ratio from 200 MeV per nucleon(-1) to 3.7 GeV per nucleon(-1)

O. Reimer, W. Menn, M. Hof, M. Simon, A.J. Davis, A.W. Labrador, R.A. Mewaldt, S.M. Schindler, L.M. Barbier, E.R. Christian, K.E. Krombel, J.W. Mitchell, J.F. Ormes, R.E. Streitmatter, R.L. Golden, S.J. Stochaj, W.R. Webber, Ib Lundgaard Rasmussen

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The abundances of cosmic-ray helium isotopes between 0.2 and 3.7 GeV nucleon(-1) were measured by the Isotope Matter Antimatter Experiment (IMAX) during a flight from Lynn Lake, Manitoba, Canada on 1992 July 16-17. The IMAX balloon-borne magnetic spectrometer realized a direct measurement of the charge, the velocity, and the rigidity of cosmic rays using plastic scintillators, a high-resolution time-of-flight system, and two silica-aerogel Cerenkov counters in conjunction with a drift chamber/multiwire proportional chamber tracking system. About 75,000 helium isotopes are identified by their mass using the velocity versus magnetic rigidity technique. The measured He-3/He-4 ratios are corrected to the top of the atmosphere, and a comparison with previous data is given. The observed isotopic composition is found to be generally consistent with the predictions of a standard leaky box model of cosmic-ray transport in the Galaxy.

Original language	English
Journal	Astrophysical Journal
Volume	496
Issue number	1
Pages (from-to)	490-502
ISSN	0004-637X
Publication status	Published - 1998

Keywords

nuclear reactions
abundances
acceleration of particles
cosmic rays
nucleosynthesis
balloons

OpenUrl availability

Full text

Cite this

Reimer, O., Menn, W., Hof, M., Simon, M., Davis, A. J., Labrador, A. W., Mewaldt, R. A., Schindler, S. M., Barbier, L. M., Christian, E. R., Krombel, K. E., Mitchell, J. W., Ormes, J. F., Streitmatter, R. E., Golden, R. L., Stochaj, S. J., Webber, W. R., & Rasmussen, I. L. (1998). The cosmic-ray He-3/He-4 ratio from 200 MeV per nucleon(-1) to 3.7 GeV per nucleon(-1). Astrophysical Journal, 496(1), 490-502.

@article{5bb25481681847579f591a62d3565dc0,

title = "The cosmic-ray He-3/He-4 ratio from 200 MeV per nucleon(-1) to 3.7 GeV per nucleon(-1)",

abstract = "The abundances of cosmic-ray helium isotopes between 0.2 and 3.7 GeV nucleon(-1) were measured by the Isotope Matter Antimatter Experiment (IMAX) during a flight from Lynn Lake, Manitoba, Canada on 1992 July 16-17. The IMAX balloon-borne magnetic spectrometer realized a direct measurement of the charge, the velocity, and the rigidity of cosmic rays using plastic scintillators, a high-resolution time-of-flight system, and two silica-aerogel Cerenkov counters in conjunction with a drift chamber/multiwire proportional chamber tracking system. About 75,000 helium isotopes are identified by their mass using the velocity versus magnetic rigidity technique. The measured He-3/He-4 ratios are corrected to the top of the atmosphere, and a comparison with previous data is given. The observed isotopic composition is found to be generally consistent with the predictions of a standard leaky box model of cosmic-ray transport in the Galaxy.",

keywords = "nuclear reactions, abundances, acceleration of particles, cosmic rays, nucleosynthesis, balloons",

author = "O. Reimer and W. Menn and M. Hof and M. Simon and A.J. Davis and A.W. Labrador and R.A. Mewaldt and S.M. Schindler and L.M. Barbier and E.R. Christian and K.E. Krombel and J.W. Mitchell and J.F. Ormes and R.E. Streitmatter and R.L. Golden and S.J. Stochaj and W.R. Webber and Rasmussen, {Ib Lundgaard}",

year = "1998",

language = "English",

volume = "496",

pages = "490--502",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

Reimer, O, Menn, W, Hof, M, Simon, M, Davis, AJ, Labrador, AW, Mewaldt, RA, Schindler, SM, Barbier, LM, Christian, ER, Krombel, KE, Mitchell, JW, Ormes, JF, Streitmatter, RE, Golden, RL, Stochaj, SJ, Webber, WR & Rasmussen, IL 1998, 'The cosmic-ray He-3/He-4 ratio from 200 MeV per nucleon(-1) to 3.7 GeV per nucleon(-1)', Astrophysical Journal, vol. 496, no. 1, pp. 490-502.

TY - JOUR

T1 - The cosmic-ray He-3/He-4 ratio from 200 MeV per nucleon(-1) to 3.7 GeV per nucleon(-1)

AU - Reimer, O.

AU - Menn, W.

AU - Hof, M.

AU - Simon, M.

AU - Davis, A.J.

AU - Labrador, A.W.

AU - Mewaldt, R.A.

AU - Schindler, S.M.

AU - Barbier, L.M.

AU - Christian, E.R.

AU - Krombel, K.E.

AU - Mitchell, J.W.

AU - Ormes, J.F.

AU - Streitmatter, R.E.

AU - Golden, R.L.

AU - Stochaj, S.J.

AU - Webber, W.R.

AU - Rasmussen, Ib Lundgaard

PY - 1998

Y1 - 1998

N2 - The abundances of cosmic-ray helium isotopes between 0.2 and 3.7 GeV nucleon(-1) were measured by the Isotope Matter Antimatter Experiment (IMAX) during a flight from Lynn Lake, Manitoba, Canada on 1992 July 16-17. The IMAX balloon-borne magnetic spectrometer realized a direct measurement of the charge, the velocity, and the rigidity of cosmic rays using plastic scintillators, a high-resolution time-of-flight system, and two silica-aerogel Cerenkov counters in conjunction with a drift chamber/multiwire proportional chamber tracking system. About 75,000 helium isotopes are identified by their mass using the velocity versus magnetic rigidity technique. The measured He-3/He-4 ratios are corrected to the top of the atmosphere, and a comparison with previous data is given. The observed isotopic composition is found to be generally consistent with the predictions of a standard leaky box model of cosmic-ray transport in the Galaxy.

AB - The abundances of cosmic-ray helium isotopes between 0.2 and 3.7 GeV nucleon(-1) were measured by the Isotope Matter Antimatter Experiment (IMAX) during a flight from Lynn Lake, Manitoba, Canada on 1992 July 16-17. The IMAX balloon-borne magnetic spectrometer realized a direct measurement of the charge, the velocity, and the rigidity of cosmic rays using plastic scintillators, a high-resolution time-of-flight system, and two silica-aerogel Cerenkov counters in conjunction with a drift chamber/multiwire proportional chamber tracking system. About 75,000 helium isotopes are identified by their mass using the velocity versus magnetic rigidity technique. The measured He-3/He-4 ratios are corrected to the top of the atmosphere, and a comparison with previous data is given. The observed isotopic composition is found to be generally consistent with the predictions of a standard leaky box model of cosmic-ray transport in the Galaxy.

KW - nuclear reactions

KW - abundances

KW - acceleration of particles

KW - cosmic rays

KW - nucleosynthesis

KW - balloons

M3 - Journal article

SN - 0004-637X

VL - 496

SP - 490

EP - 502

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

The cosmic-ray He-3/He-4 ratio from 200 MeV per nucleon(-1) to 3.7 GeV per nucleon(-1)

Abstract

Keywords

OpenUrl availability

Fingerprint

Cite this