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In-Situ Cosmogenic 14C: Production and Examples of its Unique Applications in Studies of Terrestrial and Extraterrestrial Processes

Published online by Cambridge University Press:  18 July 2016

D Lal  and
A J T Jull
D Lal
Affiliation:
Scripps Institution of Oceanography, GRD 0244, La Jolla, California 92093, USA. Email: dlal@ucsd.edu
A J T Jull
Affiliation:
NSF-Arizona AMS Laboratory, 1118 E Fourth Street, University of Arizona, Tucson, Arizona 85721, USA
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Abstract

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Nuclear interactions of cosmic rays produce a number of stable and radioactive isotopes on the earth (Lai and Peters 1967). Two of these, 14C and 10Be, find applications as tracers in a wide variety of earth science problems by virtue of their special combination of attributes: 1) their source functions, 2) their half-lives, and 3) their chemical properties. The radioisotope, 14C (half-life = 5730 yr) produced in the earth's atmosphere was the first to be discovered (Anderson et al. 1947; Libby 1952). The next longer-lived isotope, also produced in the earth's atmosphere, 10Be (half-life = 1.5 myr) was discovered independently by two groups within a decade (Arnold 1956; Goel et al. 1957; Lal 1991a). Both the isotopes are produced efficiently in the earth's atmosphere, and also in solids on the earth's surface. Independently and jointly they serve as useful tracers for characterizing the evolutionary history of a wide range of materials and artifacts. Here, we specifically focus on the production of 14C in terrestrial solids, designated as in-situ-produced 14C (to differentiate it from atmospheric 14C, initially produced in the atmosphere). We also illustrate the application to several earth science problems. This is a relatively new area of investigations, using 14C as a tracer, which was made possible by the development of accelerator mass spectrometry (AMS). The availability of the in-situ 14C variety has enormously enhanced the overall scope of 14C as a tracer (singly or together with in-situ-produced 10Be), which eminently qualifies it as a unique tracer for studying earth sciences.

Type
I. Our ‘Dry’ Environment: Above Sea Level
Information
Radiocarbon , Volume 43 , Issue 2B: Proceedings of the 17th International Radiocarbon Conference (Part 2 of 3), Conference Editors: Israel Carmi, Elisabetta Boaretto , 2001 , pp. 731 - 742
Copyright
Copyright © 2001 by the Arizona Board of Regents on behalf of the University of Arizona 

References

Anderson, EC, Libby, WF, Weinhouse, S, Reid, AF, Kirschenbaum, AD, Grosse, AV. 1947. Natural radiocarbon from cosmic radiation. Physical Review 72:931–6.Google Scholar
Arnold, JR. 1956. Beryllium-10 produced by cosmic rays. Science 124:584–5.Google Scholar
Arnold, JR. 1991. The discovery of cosmogenic 7Be and 10Be. Current Science 61:727–9.Google Scholar
Bennett, CL, Beukens, RP, Clover, MR, Gove, HE, Liebert, RB, et al. 1977. Radiocarbon dating using electrostatic accelerators: negative ions provide the key. Science 198:508–10.Google Scholar
Boyle, EA, Keigwin, LD. 1985–6. Comparison of Atlantic and Pacific paleo-chemical records for the last 250,000 yr: changes in deep ocean circulation and chemical inventories. Earth and Planetary Science Letters 76:135–50.Google Scholar
Brenninkmeijer, CAM, Lowe, DC, Manning, MR, Sparks, RJ, Van Velthoven, PFJ. 1995. The 13C, 14C, and 18O Isotopic composition of CO, CH4, and CO2 in the higher southern latitudes lower stratosphere. Journal of Geophysical Research 100:26, 163–72.Google Scholar
Castagnoli, C, Lal, D. 1980. Solar modulation effects in terrestrial production of carbon-14. Radiocarbon 22(2):133–58.Google Scholar
Cresswell, RG, Beukens, RP, Rucklidge, JC, Miura, Y. 1994. Distinguishing spallogenic from non-spallogenic carbon in chondrites using gas and temperature separations. Nuclear Instruments and Methods in Physics Research B92:505–9.Google Scholar
Elmore, D, Phillips, FM. 1987. Accelerator mass spectrometry for measurement of long lived radioisotopes. Science 236:543–50.Google Scholar
Goel, PS, Kharkar, DP, Lal, D, Narsappaya, N, Peters, B, Yatirajam, V. 1957. The beryllium-10 concentration in deep sea sediments. Deep Sea Research 4:202–10.Google Scholar
Handwerger, DA, Cerling, TE, Bruhn, RL. 1999. Cosmogenic 14C in carbonate rocks. Geomorphology 27:13–24.Google Scholar
Jockel, P, Lawrence, MG, Brenninkmeijer, CAM. 1999. Simulations of cosmogenic 14CO using the three-dimensional atmospheric model MATCH: Effects of 14C production distribution and the solar cycle. Journal of Geophysical Research 104:11,733–43.Google Scholar
Jull, AJT, Barker, DL, Donahue, DJ. 1987. On the 14C content in radioactive ores. Chemical Geology (Isotope Geosciences section) 66:35–40.Google Scholar
Jull, AJT, Lifton, N, Phillips, WM, Quade, J. 1994a. Studies of the production rate of cosmic-ray produced 14C in rock surfaces. Nuclear Instruments and Methods in Physics Research B92:308–10.Google Scholar
Jull, AJT, Lifton, N, Phillips, WM, Quade, J. 1994b. Studies of the production rate of 14C in rock surfaces. Nuclear Instruments and Methods in Physics Research B92:308–10.Google Scholar
Jull, AJT, Lal, D, Donahue, DJ, Mayewski, P, Lorius, C, Raynaud, D, Petit, J. 1994c. Measurements of cosmic-ray-produced 14C in firn and ice from Antarctica. Nuclear Instruments and Methods in Physics Research B92:326–30.Google Scholar
Jull, AJT, Lal, D, Donahue, DJ. 1995. Evidence for a non-cosmogenic implanted 14C component in lunar samples. Earth and Planetary Science Letters 136:693–702.Google Scholar
Jull, AJT, Lal, D, Burr, GS, Bland, PA, Bevan, AWR, Beck, W. 2000a. Radiocarbon beyond this world. Radiocarbon 42(1):151–72.Google Scholar
Jull, AJT, Lal, D, McHargue, LR, Burr, GS, Klandrud, SE, Donahue, DJ. 2000b. Cosmogenic and implanted radionuclides studied by selective etching of lunar soils. Nuclear Instruments and Methods in Physics Research In press.Google Scholar
Lal, D, Peters, B. 1967. Cosmic ray produced activity on the earth. Handbuch der Physik 46:551–612.Google Scholar
Lal, D. 1988a. In-situ produced cosmogenic isotopes in terrestrial rocks. Annual Reviews of Earth and Planetary Sciences 16:355–88.Google Scholar
Lal, D. 1988b. Theoretically expected variations in the terrestrial cosmic ray production rates of isotopes. In: Castognoli, GC, editor. Proceedings of the International School of Physics “Enrico Fermi” Course XCV. Varenna, June 1985. Amsterdam: North Holland Pub. Co. p 216–33.Google Scholar
Lal, D, Jull, AJT, Donahue, DJ, Burtner, D, Nishiizumi, K. 1990. Polar ice ablation rates measured using in situ cosmogenic 14C. Nature 346:350–2.Google Scholar
Lal, D. 1991a. The discovery of cosmogenic 10Be in India. Current Science 61:722–7.Google Scholar
Lal, D. 1991b. Cosmic ray tagging of erosion surfaces: in situ production rates and erosion models. Earth and Planetary Science Letters 104:424–39.Google Scholar
Lal, D. 1992a. Expected secular variations in the global terrestrial production rate of radiocarbon. In: Bard, E, Broecker, WS, editors. The Last Deglaciation: absolute and radiocarbon chronologies. NATO ASI Series Vol. 12. Berlin: Springer-Verlag. p 113–26.Google Scholar
Lal, D. 1992b. Cosmogenic in-situ radiocarbon on the Earth. In: Taylor, RE, Long, A, Kra, RS, editors. Radiocarbon after four decades. New York: Springer-Verlag. p 146–61.Google Scholar
Lal, D, Suess, HE. 1968. The radioactivity of the atmosphere and hydrosphere. Annual Reviews of Nuclear Science 18:407–34.Google Scholar
Lal, D, Arnold, JR. 1985. Tracing quartz through the environment. Proceedings Indian Academy of Sciences (Earth and Planetary Sciences) 94:1–5.Google Scholar
Lal, D, Jull, AJT. 1994. Studies of cosmogenic in-situ 14CO and 14CO2 produced in terrestrial and extra-terrestrial samples: experimental procedures and applications. Nuclear Instruments and Methods in Physics Research B92:291–6.Google Scholar
Lal, D, Jull, AJT. 1995. In-situ cosmogenic 14C in polar ice: chemical phases and concentrations. Antarctic Journal of the U.S.–Review 30(5):79–80.Google Scholar
Lal, D, Pavich, M, Gu, ZY, Jull, AJT, Caffee, M, Finkel, R, Southon, J. 1996. Recent erosional history of a soil profile based on cosmogenic in-situ radionuclides 14C and 10Be. Geophysics Monograph Series 95:371–6.Google Scholar
Lal, D, Jull, AJT, Burr, GS, Donahue, DJ. 1997. In-situ 14C concentrations in GISP2, <17 ky BP ice; implications to ice flow dynamics and atmospheric pressure changes. Journal of Geophysical Research 102(C12):26,505–10.Google Scholar
Lal, D. 1998. Cosmic ray produced isotopes in terrestrial systems. Proceedings Indian Academy of Sciences (Earth and Planetary Sciences) 107:241–9.Google Scholar
Lal, D. 2000. Cosmogenic nuclide production rate systematics in terrestrial materials; present knowledge, needs and future action for improvement Nuclear Instruments and Methods in Physics Research B172:772–81.Google Scholar
Lal, D, Jull, AJT, Burr, GS, Donahue, DJ. 2000. On the characteristics of cosmogenic in-situ 14C in documented GISP2 Holocene ice samples. Nuclear Instruments and Methods in Physics Research B172:623–31.Google Scholar
Libby, WF. 1952. Radiocarbon dating. Chicago: University of Chicago Press.Google Scholar
Libby, WF, Anderson, EC and Arnold, JR. 1949. Age determination by radiocarbon content: world-wide assay of natural radiocarbon. Science 109:227–8.Google Scholar
Lifton, NA, Jull, AJT, Quade, J. 2001. A new extraction technique and production rate estimate for in situ cosmogenic 14C in quartz. Geochimica et Cosmochimica Acta. In press.Google Scholar
Lingenfelter, RE. 1963. Production of 14C by cosmic-ray neutrons. Reviews of Geophysics. 1:35–53.CrossRefGoogle Scholar
MacKay, C, Pandow, M, Wolfgang, R. 1963. On the chemistry of natural radiocarbon. Journal of Geophysical Research 68:3929–3931.Google Scholar
Nagashima, K, Sakakibara, S, Murakami, K. 1989. Response and yield functions of neutron monitor, galactic cosmic-ray spectrum and its solar modulation, derived from all the available world-wide surveys. Il Nuovo Cimento 12:173–209.CrossRefGoogle Scholar
Nelson, DE, Koertling, RG, Stott, WR. 1977. Carbon-14: direct detection at natural concentrations. Science 198:507–8.Google Scholar
Nishiizumi, K, Kohl, CP, Arnold, JR, Dorn, R, Klein, J, Fink, D, Middleton, R, Lal, D. 1993. Role of in situ cosmogenic nuclides 10Be and 26A1 in the study of diverse geomorphic processes. Earth Surface Processes and Landforms 18:407–425.Google Scholar
Pandow, M, MacKay, C, Wolfgang, R. 1960. The reaction of atomic carbon with oxygen: significance for the natural radio-carbon cycle. Journal of Nuclear Chemistry 14:153–8.Google Scholar
Price, PB. 1989. Heavy particle radioactivity (A>4). Annu. Rev. Nucl. Part. Sci. 39:19–42.Google Scholar
Rose, HJ, Jones, GA. 1984. A new kind of natural radioactivity. Nature 307:245–7.CrossRefGoogle Scholar
Rowland, FS, Libby, WF. 1953. Hot atom recoils from 12C(γ,n)11C* . Journal of Chemical Physics 21:1493–4.Google Scholar
Sandulescu, A, Poenaru, DN, Greiner, W. 1980. New type of decay of heavy nuclei intermediate between fission and a-decay. Soviet Journal of Particles and Nuclei 11:528–41.Google Scholar
Shea, MA, Smart, DF, Gentile, LC. 1987. Estimating cosmic ray vertical cutoff rigidities as a function of the McIlwain L-parameter for different epochs of the geomagnetic field. Physics of Earth and Planetary Interiors 48:200–5.Google Scholar
Stuiver, M, Reimer, PJ, Bard, E, Beck, JW, Burr, GS, Hughen, KA, Kromer, B, McCormac, G, van der Plicht, J, Spurk, M. 1998. INTCAL98 radiocarbon age calibration, 24,000–0 cal BP. Radiocarbon 40(3):1041–83.CrossRefGoogle Scholar
van Roijen, JJ, Bintanja, JR, van der Borg, K, van der Broeke, A, de Jong, FM, Oerlemans, J. 1994. Dry extraction of 14CO2 and 14CO from Antarctic ice. Nuclear Instruments and Methods in Physics Research B92:331–4.Google Scholar
Vorobyov, AA, Seleverstov, DM, Grachov, VT, Kondurov, IA, Nikitin, AM, Smirnov, NN, Zalite, YK. 1972. Light nuclei from 235U neutron fission. Physics Letters 40B:102–4.Google Scholar
Webber, WR, Lockwood, JA. 1988. Characteristics of the 22-year modulation of cosmic rays as seen by neutron monitors. Journal of Geophysical Research 93:8735–40.CrossRefGoogle Scholar
Zito, R, Donahue, DJ, Davis, SN, Bentley, HW, Fritz, P. 1980. Possible sub-surface production of carbon-14. Geophysical Research Letters 7:235–8.Google Scholar