IJW / Laboratory and Theory Discipline

Workshop on Photolysis and Radiolysis of Outer Solar System Ices (PROSSI)

March 27–29, 2000
Sponsored by
NASA Headquarters, Office of Space Sciences
Johns Hopkins University Applied Physics Laboratory

For detailed information see:
http://sd-www.jhuapl.edu/PROSSI

Background

This workshop brings together two communities: laboratory groups studying ices and the effects of photolysis and radiolysis and the remote sensing groups studying icy objects in the outer solar system and grains in the interstellar medium. The workshop provides a forum for integrating the latest laboratory measurements with the exciting new observations by such missions as Galileo, ISO, and HST. In addition, it provides a format for discussing the expected data from such upcoming missions as CASSINI, Rosetta, Deep Space 4, and CONTOUR. Reviews and discussions of the physical and chemical alterations caused by photolysis and radiolysis are paired with presentations of the remote sensing observations of the ISM and solar system objects exhibiting evidence for radiation effects.

Workshop Format

The workshop comprises reviews, discussions, and posters. Morning sessions open with a 45 minute review on a
focused subtopic followed by 90 minutes of discussion. During the discussion sessions attendees are invited to
present material relevant to the subtopic. Discussion presentations are limited to 2 viewgraphs, and are moderated
by workers in both the laboratory and remote sensing communities. Afternoon sessions focus on posters.
Registered participants who submit a one page abstract will be given poster space to present their most recent
work; all attendees are strongly encouraged to participate in the poster presentations in addition to the discussion sessions. At the end of each day during the wrap-up plenary session, the moderators will summarize the discussion session and the relevant posters.

Registration

To receive additional announcements and notes concerning this workshop submit an expression of interest at:
http://sd-www.jhuapl.edu/PROSSI by 15 August 1999. All registration will be handled electronically. Early
registration and abstract submission deadline is 14 February 2000; the late registration deadline is 10 March 2000.

Program

Monday, 27 March 2000

Review of observations: Where do we see evidence for the effects of photolysis, radiolysis, and thermal
processing?

* Interstellar Medium

Invited Reviewer: P. Ehrenfreund,
Moderators: L. d'Hendercourt & M. E. Palumbo

* Comets

Invited Reviewer: M. Mumma,
Moderators: A. Stern & B. Donn

* Planetary Surfaces

Invited Reviewer: D. Cruikshank,
Moderators: B. Carlson & R. Brown

Tuesday, 28 March 2000

Review of the physical and chemical alterations caused by photolysis and radiolysis

* Interpreting Planetary Spectra

Invited Reviewer: R. Clark

* Ice Structures

Invited Reviewer: P. Devlin,
Moderators: T. McCord & V. Buch

* Structural Alterations

Invited Reviewer: T. Orlando,
Moderators: R. Johnson & B. Kay

* Chemical Alterations

Photolysis, Invited Reviewer: M. Bernstein,
Radiolysis, Invited Reviewer: R. Hudson,
Moderators: L. Allamandola & M. Moore

Wednesday, 29 March 2000

Relation of laboratory measurements to solar system observations

* The Physical State of Ice

Invited Reviewer: T. Roush,
Moderators: R. Baragiola & A. L. Lane

* Laboratory Measurements Applied to Missions

Planetary Missions, Invited Reviewer: W. Smythe,
Cometary Missions, Invited Reviewer: J. Bell,
Moderators: T. Johnson & J. Veverka

* Limitations of Laboratory Simulations

Invited Reviewer: B. Schmitt,
Moderators: G. Strazzulla & A. Bar-Nun

For questions, comments, or to be added to the subscription list, please notify:

Julianne I. Moses
Lunar and Planetary Institute
3600 Bay Area Blvd.
Houston, TX 77058-1113
moses@lpi.usra.edu

July 22, 1999