Abstract
The upper limit on the quiet time solar neutron flux from 1–20 MeV has been measured to be less than 2 × 10-3 n cm-2 s−1 at the 95% confidence level. This result is deduced from the OGO-6 neutron detector measurements of the ‘day-night’ effect near the equator at low altitudes for the period from June 7, 1969, to December 23, 1969. The OGO-6 detector had very low (< 4%) counting rate contributions from locally produced neutrons in the detecting system and the spacecraft and from charged-particle interactions in the neutron sensor.
Similar content being viewed by others
References
Alsmiller, R. G. and Boughner, R. T.: 1968, J. Geophys. Res. 73, 4935.
Bame, S. J. and Ashbridge, J. R.: 1966, J. Geophys. Res. 71, 4605.
Biermann, Von L., Haxel, O., and Schluter, A.: 1951, Z. Naturforsch. 6a, 47.
Chupp, E. L.: 1971, Space Sci. Rev. 12, 486.
Cortellessa, P., de Benedetto, P., and Paizis, C.: 1970, Solar Phys. 14, 427; 1971, Solar Phys. 20, 474.
Daniel, R. R., Gokhale, G. S., Joseph, G., and Lavakare, P. J.: 1971, J. Geophys. Res. 76, 3152.
Eyles, C. J., Linney, A. D., and Rochester, G. K.: 1971, Proc. IUPAP Cosmic-Ray Conf., Hobart.
Forrest, D. J. and Chupp, E. L.: 1969, Solar Phys. 6, 339.
Frier, P. S. and Webber, W. R.: 1963, J. Geophys. Res. 68, 1605.
Heidbreder, E., Pinkau, K., Reppin, C., and Schonfelder, V.: 1970, J. Geophys. Res. 75, 6347.
Hess, W. N.: 1962, Proc. of the 5th Intern. Seminar on Cosmic Rays, La Paz, Bolivia.
Hess, W. N. and Kaifer, R. C.: 1967, Solar Phys. 2, 202.
Hess, W. N., Canfield, E. H., and Lingenfelter, R. E.: 1961, J. Geophys. Res. 66, 665.
Jenkins, R. W., Ifedili, S. O., Lockwood, J. A., and Razdan, H.: 1971, J. Geophys. Res. 76, 7470.
Jenkins, R. W., Lockwood, J. A., Ifedili, S. O., and Chupp, E. L.: 1970, J. Geophys. Res. 75, 4197.
Kim, C. Y.: 1970, Can. J. Phys. 48, 2155.
Lingenfelter, R. E.: 1963, J. Geophys. Res. 68, 5633.
Lingenfelter, R. E. and Ramaty, R.: 1968, High Energy Nuclear Reactions in Astrophysics, W. A. Benjamin Press, N.Y., p. 99.
Lingenfelter, R. E., Flamm, E. J., Canfield, E. H., and Kellmann, S.: 1965a, J. Geophys. Res. 70, 4077; 1965b, J. Geophys. Res. 70, 4087.
Lockwood, J. A.: 1973, Space Sci. Rev., to be published.
Lockwood, J. A., Chupp, E. L., and Jenkins, R. W.: 1969, IEEE Trans. Geoscience Electron GE-7, 88.
Roelof, E. C.: 1966, J. Geophys. Res. 71, 1305.
Shea, M. A., Smart, D. F., and McCall, J. R.: 1968, Can. J. Phys. 46, S1098.
Simnett, G.: 1971, Trans. Am. Geophys. 52, 892.
Webber, W. R. and Ormes, J. F.: 1967, J. Geophys. Res. 72, 3387.
Zych, A. D. and Frye, G. M. Jr.: 1969, J. Geophys. Res. 74, 3726.
Author information
Authors and Affiliations
Additional information
Communications Research Center, Ottawa, Ontario, Canada.
Rights and permissions
About this article
Cite this article
Lockwood, J.A., Ifedili, S.O. & Jenkins, R.W. Upper limit to the 1–20 MeV solar neutron flux. Sol Phys 30, 183–191 (1973). https://doi.org/10.1007/BF00156187
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00156187