Production and emissions of atomic carbon and oxygen in the inner coma of comet Halley: Role of electron impact

Icarus

Volumn 120, Issue 2, 1996, Pages 412-430

  Bhardwaj, A ^a   Haider, S A ^b   Singhal, R P ^c  

^a INDIAN SPACE RESEARCH ORGANISATION   (India)

^b PHYSICAL RESEARCH LABORATORY   (India)

^c BANARAS HINDU UNIVERSITY   (India)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0030118680     PISSN: 00191035     EISSN: None     Source Type: Journal    
DOI: 10.1006/icar.1996.0061     Document Type: Article

References (95)

1. A'HEARN, M. F., AND P. D. FELDMAN 1980. Carbon in Comet Bradfield 19791. Astrophys. J. 242, L187-L190.
2. AJELLO, J. M. 1971a. Emission cross sections of CO by electron impact in the interval 1260-5000 Å, I. J. Chem. Phys. 55, 3158-3168.
3. 2 by electron impact in the internal 1260-4500, Å, 2. J. Chem. Phys. 55, 3169-3178.
4. 2O by electron impact. Geophys. Res. Lett. 11, 1195-1198.
5. ALLEN, M., et al. 1987. Evidence for methane and ammonia in coma of Comet P/Halley. Astron. Astrophys. 187, 502-512.
6. ANICICH, V. G. 1993. A survey of bimolecular ion-molecule reactions for use in modelling the chemistry of planetary atmospheres, cometary coma, and interstellar clouds: 1993 supplement. Astrophys. J. Suppl. 84, 215.
7. ANICICH, V. G., AND W. T. HUNTRESS, JR. 1986. A survey of bimolecular ion-molecule reactions for use in modelling the chemistry of planetary atmospheres, cometary comae, and interstellar clouds. Astrophys. J. Suppl. 62, 553-672.
8. BALSIGER, H., et al. 1986. Ion composition and dynamics at Comet Halley. Nature 321, 330-334.
9. BEENAKKER, C. I. M., F. J. DE HEER, H. B. KROP, AND G. R. MOHLMANN 1974. Dissociative excitation of water by electron impact. Chem. Phys. 6, 445-454.
10. BHARDWAJ, A., AND R. P. SINGHAL 1990. Aurora and dayglow processes on Neptune. Indian J. Radio Space Phys. 19, 171-176.
11. BHARDWAJ, A., S. A. HAIDER, AND R. P. SINGHAL 1990. Auroral and photoelectron fluxes in cometary ionospheres. Icarus 85, 216-228.
12. BHARDWAJ, A., S. A. HAIDER, AND R. P. SINGHAL 1995. Consequences of cometary aurora on the carbon chemistry at Comet P/Halley. Adv. Space Res. 16(2), 31-36.
13. 4. Proc. R. Soc. London Ser. A 312, 417-434.
14. BROOKS, E., M. F. A. HARRISON, AND A. C. H. SMITH 1978. Measurements of the electron impact ionization cross sections of He, C, O and N atoms. J. Phys. B 11, 3115-3132.
15. COMBES, M., et al. 1986. Detection of parent molecules in Comet Halley from the IKS-Vega experiment. In 20th ESLAB Symposium, ESA SP-250, Vol. 1, pp. 353-358.
16. COMBES, M., et al. 1988. The 2.5 to 12 μm spectrum of Comet Halley from the IKS-Vega experiment. Icarus 76, 404-436.
17. CRAVENS, T. E., AND A. E. S. GREEN 1978. Airglow from the inner comas of comets. Icarus 33, 612-623.
18. CRAVENS, T. E., J. U. KOZYRA, A. F. NAGY, T. I. GOMBOSI, AND M. KURTZ 1987. Electron impact ionization in the vicinity of comets. J. Geophys. Res. 92, 7341-7353.
19. CROVISIER, J. 1993. Molecular abundances in comets. In Asteroids, Comets, Meteors 1993 (A. Milani, M. Di Martino, and A. Celino, Eds.). Kluwer Academic, Norwell, MA, in press.
20. 2 abundance in Comet P/Halley. Astron. Astrophys. 187, 481-484.
21. EBERHARDT, P., R. MEIER, D. KRANKOWSKY, AND R. R. HODGES 1994. Methanol and hydrogen sulfide in Comet Halley. Astron. Astrophys. 288, 315-329.
22. ENCRENAZ, T., AND R. KNACKE 1991. Carbonaceous compounds and comets: Inferred observations. In Comets in the Post-Halley Era (R. L. Newburn, Jr., et al., Eds.), Vol. 1, pp. 107-137. Kluwer, Dordecht.
23. EVIATAR, A., et al. 1989. Energetic ion fluxes in the inner comma Comet P/Halley. Astrophys. J. 339, 545-557.
24. FELDMAN, P. D. 1978. A model of carbon production in a cometary coma. Astron. Astrophys. 70, 547-553.
25. FELDMAN, P. D. 1983. Ultraviolet spectroscopy and the composition of cometary ice. Science 219, 347-354.
26. FELDMAN, P. D. 1991a. Ultraviolet spectroscopy of cometary comae. In Comets in the Post-Halley Era (R. L. Newburn, Jr., et al., Eds.), Vol. 1, pp. 139-148. Kluwer, Dordrecht.
27. FELDMAN, P. D. 1991b. In Chemistry in Space (J. M. Greenberg and V. Pironello, Eds.), p. 339. Kluwer, Dordrecht.
28. FELDMAN, P. D., AND W. H. BRUNE 1976. Carbon production in comet West 1975n. Astrophys. J. 209, L45-L48.
29. FELDMAN, P. D., P. Z., TAKACS, W. G. FASTIE, AND B. DONN 1974. Rocket ultraviolet spectrophotometry of Comet Kohoutek (1973f). Science 185, 705-707.
30. FELDMAN, P. D., C. B. OPAL, R. R. MEIER, AND K. R. NICOLAS 1976. Far ultraviolet excitation processes in comets. In The Study of Comets (B. Donn et al., Eds.), NASA-SP-393. pp. 773-795.
31. FELDMAN, P. D., et al. 1980. IUE observations of the UV spectrum of comet Bradfield 19791. Nature 286, 132-135.
32. 2 responsible for the outbursts of Comet Halley? Nature 324, 433-436.
33. FESTOU, M. C. 1984. Aeronomical processes in cometary atmospheres: The carbon compounds puzzle. Adv. Space Res. 4(9), 165-175.
34. FESTOU, M. C., AND P. D. FELDMAN 1987. Comets. In Exploring the Universe with the IUE Satellite (Y. Kondo, Ed.), pp. 101-118. Reidel, Dordrecht.
35. FESTOU, M. C., et al. 1986. IUE observations of Comet Halley during the Vega and Giotto encounters. Nature 321, 361-363.
36. FESTOU, M. C., H. RICKMAN, AND R. M. WEST 1993. Comets, European Southern Observatory Scientific Preprint 960, Garching, Germany.
37. Fox, J. L., AND J. H. BLACK 1989. Photodissociation of CO in the thermosphere of Venus. Geophys. Res. Lett. 16, 291-294.
38. GAN, L., AND T. E. CRAVENS 1990. Electron energetics in the inner coma of Comet Halley. J. Geophys. Res. 95, 6285-6303.
39. GANAS, P. S. 1981. Electron impact excitation cross section for carbon. Physica B + C 104, 411-415.
40. GEISS, J., et al. 1991. Interpretation of the ion mass spectra in the mass per charge range 25-35 amu/e obtained in the inner coma of Halley's comet by HIS-sensor of the Giotto IMS experiment. Astron. Astrophys. 247, 226-234.
41. GREEN, A. E. S., AND R. P. SINGHAL 1979. Microplume model of spatial yield spectra. Geophys. Res. Lett. 6, 625-628.
42. GREEN, A. E. S., C. H. JACKMAN, AND R. H. GARVEY 1977. Electron impact on atmospheric gases 2. Yield spectra. J. Geophys. Res. 82, 5104-5111.
43. GREEN, A. E. S., DAYASHANKAR, P. F. SCHIPPNICK, D. E. RIO, AND J. M. SWARTZ 1985. Field and concentration microplumes for electron impact on water. Radiat Res. 104, 1-14.
44. GRINGAUZ, K. I., et al. 1986. First in-situ plasma and neutral gas measurements at Comet Halley. Nature 321, 282-285.
45. GRÜ N., AND E. JESSBERGER 1990. Dust. In Physics and Chemistry of Comets (W. F. Huebner, Ed.), pp. 113-176. Springer-Verlag, New York.
46. HAIDER, S. A., AND R. P. SINGHAL 1983. Analytical yield spectrum approach to electron energy degradation in Earth's atmosphere. J. Geophys. Res. 88, 7185-7189.
47. HAIDER, S. A., A. BHARDWAJ, AND R. P. SINGHAL 1993. Role of auroral and photoelectrons on the abundances of methane and ammonia in the coma of Comet Halley. Icarus 101, 234-243.
48. HODGES, R. R., JR. 1990. Monte Carlo simulation of nonadiabatic expansion in cometary atmosphere: Halley. Icarus 83, 410-433.
49. HOLLENBACH, D., AND C. F. MCKEE 1989. Molecule formation and infrared emission in fast interstellar shocks. 3. Results for J shocks in molecular clouds. Astrophys. J. 342, 306-336.
50. HUEBNER, W. F., J. J. KEADY, AND S. P. LYON 1992. Solar photo rates for planetary atmospheric pollutants. Astrophys. Space Sci. 195, 1-294.
51. HUNTRESS, W. T., JR., M. ALLEN, AND M. L. DELITSKY 1991. Carbon suboxide in Comet Halley. Nature 352, 316-318.
52. IP, W. H. 1986. A preliminary consideration of electron impact ionization effect in cometary comas. Adv. Space Res. 5, 47-51.
53. IP, W. H. 1990. Energetic neutral atoms in cometary coma. Astrophys. J. 353, 290-296.
54. IP, W. H., AND W. I. AXFORD 1982. Theories of physical processes in the cometary coma and ion tails. In Comets (L. L. Wilkening, Ed.), pp. 588-634. Univ. of Arizona Press, Tucson.
55. 2. J. Geophys. Res. 84, 2714-2724.
56. JACKMAN, C. H., R. H. GARVEY, AND A. E. S. GREEN 1977. Electron impact on atmospheric gases. 1. Updated cross sections. J. Geophys. Res. 82, 5081-5090.
57. JACKSON, W. M., AND B. D. DONN 1966. Collisional processes in the inner coma. In Nature et Origine des Cometes 13th Liege Symposium pp. 133-140.
58. KELLER, C. N., AND T. E. CRAVENS 1990. Plasma density enhancement at Comet Halley diamagnetic cavity boundary. J. Geophys. Res. 95, 18,755-18,768.
59. KLIMOV, S. et al. 1986. Extremely-low frequency plasma waves in the environment of comet Halley. Nature 321, 292-293.
60. KOROSMEZEY, A., et al. 1987. A new model of cometary ionosphere, J. Geophys. Res. 92, 7331-7340.
61. KRANKOWSKY, D. 1991. The composition of comets. In Comets in the Post-Halley Era (R. L. Newburn, Jr., et al., Eds.), Vol. 2, pp. 855-877. Kluwer, Dordecht.
62. KRANKOWSKY, D., et al. 1986. In-situ gas and ion measurements at Comet Halley. Nature 21, 326-329.
63. LAMMERZAHL, P. D., et al. 1987. Expansion velocity and temperatures of gas and ions measured in the coma of Comet Halley. Astron. Astrophys. 187, 169-173.
64. LAWRENCE, G. M. 1970. The dissociative excitation of some oxygen containing molecules: Lifetimes and electron impact cross sections. Phys. Rev. A 2, 397.
65. MALAISE, D. J. 1970. Collisional effects in Cometary atmosphere. Part I. Model atmospheres and synthetic spectra. Astron. Astrophys. 5, 209.
66. MARCONI, M. L., AND D. A. MENDIS 1988. On the ammonia abundance in the coma of Halley's comet. Astrophys. J. 330, 513-517.
67. MARGREITER, D., H. DEUTSCH, M. SCHMIDT, AND T. D. MARK 1990. Electron impact ionization cross sections of molecules. Part II. Theoretical determination of total (counting) ionization cross sections of molecules: A new approach. Int. J. Mass Spectrom. Ion Processes 100, 157-176.
68. MCCOY, R. P., C. B. OPAL G. R. CARRUTHERS 1986. Far-ultraviolet spectral images of Comet Halley from sounding rockets. Nature 324, 439-441.
69. MCELORY, M. B., AND J. C. MCCONNELL 1971. Atomic carbon in the atmospheres of Mars and Venus. J. Geophys. Res. 76, 6674-6690.
70. MEIER, R., P. EBERHARDT, D. KRANKOWSKY, AND R. R. HODGES 1993. The extended formaldehyde source in Comet P/Halley. Astron. Astrophys. 277, 677-690.
71. MENDIS, D. A. 1987. A cometary aurora. Earth Moon Planets 39, 17-20.
72. MENDIS, D. A., H. L. F. HOUPIS, AND M. L. MARCONI 1985. The physics of comets. Fundam. Cosmic. Phys. 10, 1-380.
73. MITCHELL, J. B. A. 1990. The dissociative recombination of molecular ions. Phys. Rept. 186, 215-248.
74. MUMMA, M. J. 1970. The Dissociative Excitation of Atmospheric Gases. Ph.D. thesis, University of Pittsburgh, Pittsburgh, PA.
75. OPAL, C. B., AND G. R. CARRUTHERS 1977. Carbon and oxygen production rates for Comet Kohoutek (1973 XII). Astrophys. J. 211, 294-299.
76. OPAL, C. B., G. R. CARRUTHERS, D. K. PRINZ, AND R. R. MEIER 1974. Comet Kohoutek: Ultraviolet images and spectrograms. Science 185, 702-705.
77. 4. J. Phys. B 20, 3925-3936.
78. PAXTON, L. J. 1985. Pioneer Venus Orbiter ultraviolet spectrometer limb observations: Analysis and interpretation of the 166-and 156-nm data. J. Geophys. Res. 90, 5089-5096.
79. PRASAD, S. S., AND W. T. HUNTRESS, JR. 1980. A model for gas phase chemistry in interstellar clouds. 1. The basic library of chemical reac-tions, and chemistry among C, N, and O compounds. Astrophys. J. Suppl. 43, 1-87.
80. SCHMIDT, H. U., R. WEGMANN, W. F. HEUBNER, AND D. C. BOICE 1988. Cometary gas and plasma flow with detailed chemistry. Comput. Phys. Commun. 49, 17-59.
81. 3, and CO in comets. Icarus 90, 74-78.
82. SINGHAL, R. P., AND A. E. S. GREEN 1981. Spatial aspects of electron energy degradation in atomic oxygen. J. Geophys. Res. 86, 4776-4780.
83. SINGHAL, R. P., AND S. A. HAIDER 1984. Analytical yield spectrum approach to photoelectron fluxes in the Earth's atmosphere. J. Geophys. Res. 89, 6847-6852.
84. 2. J. Geophys. Res. 85, 1246-1254.
85. SINGHAL, R. P., P. F. SCHIPPNICK, D. E. RIO, AND A. E. S. GREEN 1983. Electron energy degradation in neon. Radiat. Res. 95, 32-44.
86. SMITH, A. M., T. P. STECHER, AND L. CASSWELL 1980. Production of carbon, sulfur, and CS in Comet West. Astrophys. J. 242, 402-410.
87. SMITH, E. J., et al. 1986. International cometary explorer encounter with Giacobini-Zinner: Magnetic field observations. Science 232, 382-385.
88. SPENCER, L. V., AND F. FANO 1954. Energy spectrum resulting from electron slowing down. Phys. Rev. 93, 1172-1181.
89. STEWART, A. I. F. 1987. Pioneer Venus measurements of H, O, and C production in Comet P/Halley near perihelion. Astron. Astrophys. 187, 369-374.
90. 2 relevant to edge plasma impurities. Res-Rept. NIFS-DATA-19, Na-tional Institute of Fusion Science, Nagoya, Japan.
91. TAWARA, H., AND T. KATO 1987. Total and partial ionization cross sections of atoms and ions by electron impact. At. Data Nucl. Data Tables 36, 167-353.
92. WEAVER, H. A., P. D. FELDMAN, M. C. FESTOU, AND M. F. A'HEARN 1981. Water production models for Comet Bradfield (1979x) Astrophys. J. 251, 809-819.
93. WOODS, T. N., P. D. FELDMAN, AND K. F. DYMOND 1987. The atomic carbon distribution in the coma of Comet P/Halley. Astron. Astrophys. 187, 380-384.
94. WOODS, T. N., P. D. FELDMAN, K. F. DYMOND, AND D. J. SAHNOW 1986. Rocket ultraviolet spectroscopy of Comet Halley and abundance of carbon monoxide and carbon. Nature 324, 436-438.
95. ZIPF, E. C., AND R. W. MCLAUGHLIN 1978. On the discussion of nitrogen by electron impact and by EUV photoabsorption. Planet. Space Sci. 26, 449-462.