registration form and poster abstract

["Glenn Stark" <gstark@wellesley.edu>]

Hi,
I am attaching my registration form and a poster abstract for the upcoming
NASA Workshop. I will send a check and hard-copy of the registration form
later int he week.
Thanks,
Glenn Stark


Registration form ----------------------------------------------------------------------------------------------------- Last name:  Stark First name:  Glenn Middle name/initial: Affiliation: Physics Department, Wellesley College	 Street Address: 106 Central Street City: Wellesley State: MA	 Postal Code: 02481 Country: USA Tel: 781-283-3108 Fax:  781-283-3642 E mail: gstark@wellesley.edu Citizenship*: USA Abstract title:  Molecular nitrogen photoabsorption cross sections and line widths in support of analyses of planetary atmospheres Special requirements: *Non-US citizens should contact Cara Loomis if travel reimbursement for the Workshop is required.  NASA Laboratory Astrophysics Workshop 2006 Abstract Template
Title: Molecular nitrogen photoabsorption cross sections and line widths in support of analyses of planetary atmospheres.
Author(s): Glenn Stark, Wellesley College Peter L. Smith, Harvard-Smithsonian Center for Astrophysics Kouichi Yoshino, Harvard-Smithsonian Center for Astrophysics
Abstract: The analyses of VUV occultation measurements of the N2-rich atmosphere of Titan require reliable photoabsorption cross sections and line widths for the approximately 100 vibronic bands of N2 in the 80 to 100 nm wavelength region. We report measurements of these fundamental parameters of the absorption spectrum of 14N2 in the 93.5 – 100 nm spectral region. The room temperature absorption measurements were performed with the 6.65-meter vuv spectrometer at the Photon Factory synchrotron facility with a resolving power of approximately 125,000. A line-shape fitting routine is used to extract individual rotational line f-values and predissociation-broadened line widths within the fifteen bands reported in this study. Within individual bands, we find significant departures from the predicted line strength distributions based on isolated band models. Line width analyses within each band indicate that predissociation-broadening is often highly dependent on the rotational quantum number. We illustrate the importance of N2 line widths in the analysis of Cassini occultation measurements with sample N2 transmission models over selected wavelength regions.
We gratefully acknowledge funding support from NASA grant NAG5-9059.