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Rigidity Dependence of the Interplanetary Mean Free Path

Stone, E. C. and Cummings, A. C. (1997) Rigidity Dependence of the Interplanetary Mean Free Path. In: Proceedings of the 25th International Cosmic Ray Conference. Vol.2. Potchefstroom University, Space Research Unit , Transvaal, South Africa, pp. 329-332.

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We use energy spectra of anomalous cosmic rays derived from data from experiments on the Voyager and Pioneer spacecraft to inf er the rigidity dependence of the perpendicular interplanetary mean free path over the rigidity range ~0.3 to 4 GV. Data are from three intervals: 1993/157-209, 1994/157- 313, and l 996/1-52. We use two techniques to estimate that the rigidity dependence is approximately proportional to R^2 at low rigidities with a flattening above ~1 GV, roughly consistent with recent theoretical estimates (Bieber et al. 1995).

Item Type:Book Section
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URLURL TypeDescription
Stone, E. C.0000-0002-2010-5462
Cummings, A. C.0000-0002-3840-7696
Additional Information:© Space Research Unit. Provided by the NASA Astrophysics Data System. This work was supported by NASA under contract NAS7-9l8.
Group:Space Radiation Laboratory
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Space Radiation Laboratory1997-09
Record Number:CaltechAUTHORS:20140703-225735470
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46859
Deposited By: Deborah Miles
Deposited On:11 Jul 2014 04:28
Last Modified:20 Feb 2020 14:33

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