Laboratory Charge Exchange Cross Sections and X-Ray Astrophysics

Details Laboratory Charge Exchange Cross Sections and X-Ray Astrophysics Laboratory Charge Exchange Cross Sections and X-Ray Astrophysics

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusm.p42a..03c&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #P42A-03

Physics

6060 Radiation And Spectra, 7823 Ionization Processes, 7831 Laboratory Studies

Scientific paper

The exciting and unexpected observation that hot X-rays could be produced from cold comets has spurred considerable work in the area of collisions of highly-charged ions (to simulate the solar wind) with gases such as H2, CO, H2O, CO2, and CH4 (to simulate the comet-evolved gases). The spectral energies and intensities suggest that the X-rays arise from solar wind highly-charged ions (HCIs) that have charge-exchanged with the neutral species, leaving excited HCIs that stabilize via X-ray emission [1,2]. We will review recent work in the area of X-ray emissions and charge exchange, and present recent results of absolute charge-exchange cross sections and X-ray spectra. The work carried out at JPL/Caltech was supported through agreement with NASA. [1] V. Kharchenko et al., Ap. J. 585, L73 (2003). [2] J. B. Greenwood et al., Phys. Scripta T110, 358 (2004).

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