1. Cosmic Ice Laboratory Marla Moore Reggie Hudson Paul Cooper Zach Pozen

2. Solar System Surfaces Comets Interstellar Icy Astrobiological Environments

3. Interstellar Grains as Reaction Sites

4. Hydrogen Flow UV-Photolysis Lamp Flux 5 x 10 14 photon cm -2 s -1 Average energy 7.4 eV

5. p+p+ IR Spectrometer UV

6. Focus of Astrobiology Related Research Complex organic products from energetically processed nitriles Infrared Spectroscopy Chemical Analysis Oxygen/Ozone/Hydrogen Peroxide — Paul Cooper Student projects CH 4 C 2 H 4 O isomers OCS

7. Nitrile-CH 3 CN Acetonitrile has been detected on Titan, in cometary comae and in the ISM. If bombarded by radiation--- More complex molecules? Prebiotic molecules result— e.g.Amino acids ?

8. (Hudson & Moore, Icarus, 2004)  HNC, CH 2 =C=NH, HCN (?)  OCN −, CH 2 =C=NH, HCN (?), CO 2 (?) CH 3  C  N p+p+ H 2 O p + Nitriles  Complex Organics Infrared Spectroscopy ketenimine

9. Formation of Ketenimine and HCN A structural isomer: Energetic input gives rapid isomerization or cleavage of C- C bond ?

10. Formation of OCN - Polyatomic anion: Oxidation product of water and CH 3 CN Intermediate in oxidation to CO 2 Stabilized by resonance

11. Formation of Carbon Dioxide CO 2 is an oxidation product of OCN - ?

12. Room temperature residues Analysis of residue-- Search for amino acid synthesis MID IR Spectrum

13. Nitriles  Amino Acids Chemical Analysis  p+p+

15. Sample Aspartic Acid Glycine  Alanine Alanine  ABA  ABA

16. n-propylamine i- propylamine

17. Glycine

18. Work in Progress Finish analysis of residues, blanks, and analysis of higher temperature experiments. Publish results Search for cytosine and other pyrimidines

19. Progress Report 2005 Talks and Posters: Invited UMD Notre Dame RPI IAU-Asilomar PacifiChem Publications and Proposals: DPS- poster NAI-Boulder-2 posters AOGS-Singapore-co-organized 2 sesssions-2 talks NASA Laboratory Workshop-2 posters ACS-Atlanta-talk, 2 student posters AbSciCon-talk, poster Hudson and Moore 2 published 2 in press co-authored 1 book chapter co authors on A&A benzene related paper Hudson only, 1 in press 1 book chapter proposed and accepted (with astrobiology component) 1 AGU session proposed and accepted (with astrobiology connection)

20. Facilities: New electron gun has arrived Money for new optical bench has been received

21. http://www.eckerd.edu/academics/chemistry/courses/ch210/ Education outreach: Astrobiology courses taught

22. Mentored 3 students Zach Pozen 2 students from the US Naval Academy

23. www-691.gsfc.nasa.gov/cosmic.ice.lab Web page is up to date

24. Session 18---Tuesday 3:45 Ice Prebiotic Chemistry of Nitriles: Identification of Complex Organic Products Reggie Hudson

25. Uv and ion bombardment MeV Cosmic Ray Magnetospheric H + O n+, S n+ Bombardment Photolysis UV Photons Sputtering Radiolysis