Papers on Climate and Atmospheric Physics
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Simulation of particle fluxes and cosmogenic nuclide production in the Earth's atmosphere
Abstract
A purely physical model for the simulation of cosmic ray particle interactions with the Earth's atmosphere and subsequent production and transport of secondary particles is presented. Neutron and proton spectra as a function of the coordinate in the atmosphere were calculated using a GEANT / MCNP-based code system. The calculated neutron fluxes are in good agreement with experimental data based on neutron monitor measurements. These fluxes, together with experimental or evaluated cross sections, were used to calculate the production rates of 3H, 7Be, 10Be 14C, and 36Cl. The dependencies of these production rates on solar activity and geomagnetic field intensity were investigated in detail. The obtained production rates agree well with most published experimental and theoretical values. Possible reasons for some differences are discussed.
References
- Alsmiller Jr., R. G., J. Barish, Neutron-photon multigroup cross sections for neutron energies < 400 MeVORNL/TM-7818, 76Oak Ridge Natl. Lab., Oak Ridge, Tenn., 1981.
- Arnoi, P. A., A. Fasso, H. J. Moehring, J. Ranft, G. R. Stevenson, FLUKA86 User's guideCERN-TIS-RP/168, 64Eur. Org. for Nucl. Res., Geneva, 1986.
- Armstrong, T. W., K. C. Chandler, HETC — A high energy transport code, Nucl. Sci. Eng., 49, 110–119, 1972.
- Atchison, F., Sapllation and fission in heavy metal nuclei under medium energy proton bombardementMeeting on Targets for Neutron Beam Spallation SourcesJuelich, GermanyJune 25–30, 1980.
- Auerbach, E. H., A-THREE: AZ general optical model code especially suited for heavy-ion calculations, Comp. Phys. Comm., 15, 165–172, 1978.
- Baumgartner, S., J. Beer, J. Masarik, G. Wagner, H.-A. Synal, Geomagnetic modulation of the 36Cl flux in the Summit GRIP ice core, Science, 279, 1330–1332, 1998.
- Beer, J., F. Joos, C. Lukasczyk, W. Mendel, J. Rodriguez, U. Siegenthaler, R. Stellmacher, 10Be as an indicator of solar variability and climate, The Solar Engine and Its Influence on Terrestrial Atmosphere and Climate E. Nesme-Ribes, 221–233, Springer Verlag, New York, 1994.
10.1007/978-3-642-79257-1_14 Google Scholar
- Bhandari, N., et al., Depth and size dependence of cosmogenic nuclide production rates in stony meteoroids, Geochim. Cosmochim. Acta, 57, 2361–2375, 1993.
- Bland, C. J., G. Cioni, Geomagnetic cutoff rigidities in nonvertical directions, Earth Planet. Sci. Lett., 4, 399–405, 1968.
- Blinov, A., The dependence of cosmogenic isotope production rate on solar activity and geomagnetic field variations, Secular Solar and Geomagnetic Variations in the last 10,000 Years F. R. Stephenson, A. W. Wolfendale, 329–340, Kluwer Acad., Norwell, Mass., 1988.
10.1007/978-94-009-3011-7_20 Google Scholar
- Bodemann, R., et al., Production of residual nuclei by proton-induced reactions on C, N, O, Mg, Al, and Si, Nucl. Instrum. Methods Phys. Res., B82, 9–31, 1993.
- Briesmeister, J. F., MCNP — A general Monte Carlo N-particle transport code version 4ALA-12625-M, 693Los Azlamos Natl. Lab., Los Alamos, N.M., 1993.
- Brun, B., et al., GEANT3 User's guideRep. DD/EE/84-1, 584Eur. Org. for Nucl. Res., Geneva, 1987.
- Cameron, A. G. W., A revised semiempirical mass formula, Can. J. Phys., 35, 1021–1031, 1957.
- Carmichael, H., M. Bercovitch, Analysis of IQSY cosmic-ray survey measurements, Can. J. Phys., 47, 2073–2093, 1969.
- Castagnoli, G. C., D. Lal, Solar modulation effects in terrestrial production of carbon 14, Radiocarbon, 22, 133–158, 1980.
- Champion, K. S. W., A. E. Cole, A. J. Kantor, Standard and reference atmosphere, Handbook of Geophysics and the Space Environment A. S. Jursa, 14-1–14-43, Air Force Geophys. Lab., Bedford, Mass., 1985.
- Conrad, N. J., P. W. Kubik, H. E. Gove, D. Elmore, A 36Cl profile in Greenland ice core from AD 1265 to 1865, Radiocarbon, 31, 585–591, 1989.
- Damon, P. E., J. C. Lerman, A. Long, Temporal fluctuations of atmospheric 14C: Causal factors and applications, Ann. Rev. Earth Planet. Sci., 6, 457–494, 1978.
- Garcia-Munoz, M., G. M. Mason, J. A. Simpson, New aspects of the cosmic ray modulation in 1974–1975 near solar minimum, Astrophys. J., 213, 263–268, 1977.
- Gosse, J. C., R. C. Reedy, C. D. Harrington, J. Poths, Overview of the workshop on secular variations in production rates of cosmogenic nuclides on Earth, Radiocarbon, 38, 135–147, 1996.
- Guyodo, Y., J.-P. Valet, Relative variations in geomagnetic intensity from sedimentary records: The past 200,000 years, Earth Planet. Sci. Lett., 143, 23–36, 1996.
- Hess, W. N., E. H. Canfield, R. E. Lingenfelter, Cosmic ray demography, J. Geophys. Res., 66, 665–677, 1961.
- Huggle, D., et al., Production of cosmogenic 36Cl on atmospheric argon, Planet. Space Sci., 44, 147–151, 1996.
- Hughes, E. B., P. L. Marsden, Response of a standard IGY neutron monitor, J. Geophys. Res., 71, 1435–1449, 1966.
- Knies, D. L., et al., 7Be, 10Be and 36Cl in precipitation, Nucl. Instrum. Methods Phys. Res., B92, 340–344, 1994.
- Lal, D., Theoretically expected variations in the terrestrial cosmic-ray production of isotopes, Solar-Terrestrial Relationships G. C. Castagnoli, D. Lal, 216–233, Soc. Italiana di Fisica-Bologna-Italy, Bologna, 1988.
- Lal, D., B. Peters, Cosmic ray produced radioactivity on the Earth, Handbuch der Physik, XLVI/2, 551–612, Springer Verlag, New York, 1967.
10.1007/978-3-642-46079-1_7 Google Scholar
- Light, E. S., M. Merker, H. J. Vershell, R. B. Mendel, S. A. Korff, Time-dependent worldwide distribution of atmospheric neutrons and of their products, 2, Calculations, J. Geophys. Res., 78, 2741–2762, 1973.
- Lingenfelter, R. E., Production of carbon-14 by cosmic-ray neutrons, Rev. Geophys., 1, 35–55, 1963.
- Masarik, J., R. C. Reedy, Effects of bulk chemical composition on nuclide production processes in meteorites, Geochim. Cosmochim. Acta, 58, 5307–5317, 1994.
- Masarik, J., R. C. Reedy, Terrestrial cosmogenic-nuclide production systematic calculated from numerical simulations, Earth Planet. Sci. Lett., 136, 381–395, 1995.
- Michel, R., et al., Simulation and modeling of the interactions of galactic protons with stony meteoroids, Planet. Space Sci., 43, 557–572, 1995a.
- Michel, R., et al., Production of radionuclides from target elements (Z<29) by proton-induced reactions between 800 and 2600 MeV, Nucl. Instrum. Methods Phys. Res., B103, 183–222, 1995b.
- Michel, R., et al., Cross sections for the production of residual nuclides by low-and medium-energy protons from the target elements C, N, O, Mg, Al, Si, Ca, Ti, Mn, Fe, Co, Ni, Cu, Sr, Y, Zr, Nb, Ba, and Au, Nucl. Instrum. Methods Phys. Res., B129, 153–193, 1997.
- Monaghan, M. C., S. Krishnaswami, K. K. Turekian, The global-average production rate of 10Be, Earth Planet. Sci. Lett., 76, 279–287, 1985.
- Nakamura, T., H. Sugita, M. Imamura, Y. Uwamino, S. Shibata, H. Nagai, M. Takehatake, K. Kobayashi, Measurement of long-lived 10Be, 14C, and 26Al production cross sections for 10–40 MeV neutrons by accelerator mass spectrometry, Nuclear Data for Science and Technology S. M. Qaim, 714–716, Springer Verlag, New York, 1992.
10.1007/978-3-642-58113-7_203 Google Scholar
- Neher, H. V., Cosmic ray particles that changed from 1954 to 1958 to 1965, J. Geophys. Res., 72, 1527–1539, 1967.
- Newkirk, L. L., Calculation of low-energy neutron flux in the atmosphere by the Sn method, J. Geophys. Res., 68, 1825–1839, 1963.
- Nir, A., S. T. Kruger, R. E. Lingenfelter, E. J. Flamm, Natural tritium, Rev. Geophys., 4, 441–456, 1966.
- O'Brien, K., Secular variations in the production of cosmogenic isotopes in the Earth's atmosphere, J. Geophys. Res., 84, 423–431, 1979.
- O'Brien, K., H. A. Sandmeier, G. E. Hansen, J. E. Campbell, Cosmic-ray induced neutron background sources and fluxes for geometries of air over water, ground, iron, and aluminum, J. Geophys. Res., 83, 114–120, 1978.
- Oeschger, H., J. Houtermann, H. Loosli, M. Wahlen, The constancy of cosmic radiation from isotope studies in meteorites and on the Earth, Radiocarbon Variations and Absolute Chronology I. U. Olsen, John Wiley, New York, 1969.
- Parrat, Y., W. Hajdas, U. Baltensperger, H.-A. Synal, P. W. Kubik, M. Suter, H. W. Gaeggeler, Cross section measurements of proton induced reactions using a gas target, Nucl. Instrum. Methods Phys. Res., B113, 470–473, 1996.
- Prael, R. E., H. Lichtenstein, User guide to LCS: The LAHET Code SystemLA-UR-89-3014, 76Los Alamos Nat. Lab., Los Alamos, N.M., 1989.
- Raisbeck, G. M., F. Yiou, The application of nuclear cross section measurements to spallation reactions of cosmic rays, Spallation Nuclear Reactions and their Applications B. S. P. Shen, M. Merker, 83–101, D.Reidel, Norwell, Mass., 1976.
10.1007/978-94-010-1511-0_5 Google Scholar
- Raisbeck, G. M., F. Yiou, M. Fruneau, J. M. Loiseaux, M. Lieuvin, J. C. Ravel, Cosmogenic 10Be/7Be as a probe of atmospheric transport processes, Geophys. Res. Lett., 8, 1015–1018, 1981.
- Reedy, R. C., Nuclide production by primary-ray protons, Proc. Lunar Planet. Sci. Conf., 17th, Part 2, J. Geophys. Res., 92suppl., E697–E702, 1987.
- Reedy, R. C., J. Masarik, Cosmogenic-nuclide depth profiles in the lunar surface (abstract), Lunar. Planet. Sci., XXV, 1119–1120, 1994.
- Reedy, R. C., J. Masarik, K. Nishiizumi, J. R. Arnold, R. C. Finkel, M. W. Caffee, J. Southon, A. J. T. Jull, D. J. Donahue, Cosmogenic radionuclide profiles in Knyahinya: New measurements and models (abstract), Lunar. Planet. Sci., XXIV, 1195–1196, 1993.
- Reyss, J.-L., Y. Yokoyama, F. Guichard, Production cross sections of 26Al, 22Na, Be from argon and of 10Be 7Be from nitrogen: Implications for production rates of 26Al and 10Be in the atmosphere, Earth Planet. Sci. Lett., 53, 203–210, 1981.
- Schiekel, T., U. Herpers, M. Gloris, I. Leya, R. Michel, B. Ditrich-Hanne, H.-A. Synal, M. Suter, P. W. Kubik, Production of radio-nuclides from target elements (Z<30) by proton-induced reactions between 200 and 400 MeV, Nucl. Instrum. Methods Phys. Res., B114, 91–119, 1996a.
- Schiekel, T., F. Sudbrock, U. Herpers, M. Gloris, I. Leya, R. Michel, H.-A. Synal, M. Suter, On the production of 36Cl by high energy protons in thin and thick targets, Nucl. Instrum. Methods Phys. Res., B113, 484–489, 1996b.
- Shea, M. A., D. F. Smart, World grid of calculated cosmic ray veryical cutoff rigidities for 1980.0, Conf. Pap. Int. Cosmic Ray Conf. 18th, 5, 514–517, 1983.
- Shea, M. A., D. F. Smart, Recent and historical solar proton events, Radiocarbon, 34, 255–262, 1992.
- Simpson, J. A., Elemental and isotopic composition of the galactic cosmic rays, Ann. Rev. Nucl. Part. Sci., 33, 323–381, 1983.
- Svensmark, H., E. Friis-Christensen, Variation of cosmic ray flux and global cloud coverage — A missing link in solar-climate relationships, J. Atmos. Sol., Terr. Phys., 59, 225–1232, 1997.
- Tauxe, L., Sedimentary records of relative paleointensity of the geomagnetic field: Theory and practice, Rev. Geophys., 31, 319–354, 1993.
- Tinsley, B. A., et al., Solar variability influences on weather and climate: Possible connections through cosmic ray Ffuxes and storm intensification, J. Geophys. Res., 94, 14,783–14,792, 1989.
- Vogt, S., G. F. Herzog, R. C. Reedy, Cosmogenic nuclides in extraterrestrial materials, Rev. Geophys., 28, 253–275, 1990.
- Wilson, J. W., C. M. Costner, Nucleon and heavy-ion total and absorption cross section for selected nucleiNASA TN D-8107, 124NASA Langley Res. Cent., Hampton, Va., 1975.
- Yiou, F. G., 10Be in the GRIP ice core at Summit Greenland, J. Geophys. Res., 102, 26,783–26,794, 1997.
