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AD-A251 267 OFFICE OF NAVAL RESEARCH D TIC GRANT N00014-90-J-1943 S LECTE N081 99E2 R&T Code 4134050 SA Technical Report No. 2 Cluster/Surface Interactions and Cluster/Mat rix Dep osition by Mark M. Ross, John H. Callahan, Fred L. King Vicki H. Wysocki, Stephan B.H. Bach, Herbert H. Nelson Andrew P. Baronavski, and Stephen W. McElvany Prepared for Publication in the Materials Research Society Symposium Proceedings Virginia Commonwealth University Department of Chemistry Richmond, VA Reproduction in whole or in part is permitted for any purpose of the United States Government This document has been approved for public release and sale; its distribution is unlimited. 92-14831 02 6 04 051 Best Available Copy REPORT DOCUMENTATION PAGE Form Approved Pucilc reco"'nc ow.'Oen - oection of infoatauton s%^ %nat~eae .t.or qav ersqe I htour per resoOn,.. incluinfg IM tmmidlo t tfevwint; anstructioni. weatchng efirsinq Gala SwUvIPM qthifrr one maintain-~-: jTe i &t. neett". And dilletint Otne thte collecti of Infomaetion Serd cammeftS=f Crtiei t'i 04$dE esifnateeOfAit other auwd Of ts cOiloct,on of mfor0't ion Pc~wrig suqgfisticiW tot reoutino n ttt.5orae to *euinqtoin "ifoeauarters serveci. Direcltto information~ oerations and Reports. 1215,jetteiO" Z'~ im~cf . Site 12,4 .."-3tonl. VA 22202.4302. Ana tot". O",rpe of Manarieel and Budjg3et.. PaperwaOi Reduction Projct (0104-01"). Wasngton. DC 20OC3 1. AGENCY USE ONLY (Leave 0lank 2REPORT DATE REPORT TYPE AND DATES COVERED 4. TITLE AND SUBTITLE S. FUNDING NUMBERS Cluster/Surface Interactions and G N00014-90-3-l943 Cluster/Matrix Deposition 6.AUTHOR(S) mark M. Ross, John H. Callahan, Fred L. King, Vicki H. Wysocki, Stephan B.H. Bach, Herbert H. Nelson, Andrew P. Baronavski, and StenhenW._McElvanv ___________ 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) U. PERFORMING ORGANIZATION Department of ChemistryREOTNMR Virginia Commonwealth University Richmond, VA 23284-2006 2 9. SPONSORING/iMONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING/ MOITORING Office of Naval Research AEC EOTNME Chemistry Program 800 N. Quincy ST Arlington, VA 22217 12a~.~ ~~~~~ ~ ~~ DSRBTO/AALBLTSTTMN12b. DISTRIBUTION CODE Approved for public release distribution unlimited 13. ABSTRACT (Maximumr200 words) This paper reports the most recent results from the cluster chemistry program at the Naval Research Laboratory, in which our efforts in the characterization of gas-phase cluster properties have been extended to studies of condensed-phase species. First, in an attempt to investigate the fundamental interactions between mass-selected cluster ions and surfaces, two tandem mass spectrometers were constructed or modified, and the results of the initial experiments will be discussed. The emphasis will be on illustrating the general utility of ion/surface collisions to st 'udy fragmentations, reactions, and deposition. Second, clusters were deposited into a matrix in order to perform spectroscopic analyses. The initial experiments have been directed at optimization of the techniques. Finally, recent measurement of the ionization potentials of large carbon clusters will be reported. These results are especially significant because of the new developments in large- scale production, isolation, and characterization of these species. 14. SUBJECT TERMS IS. NUMBER OF PAGES 6 16. PRICE COOE 17. SECURITY CLASSIFICATION 18. SECURITY CLASSIFICATION 19. SECURITY CLASSIFICATION 20. LIMITATION Of ABSTRACT OF REPORT Of THIS PAGE OF ABSTRACT Iunclassified Iunciassified unclassified NSN 7540-01-290-SSOO Standard Form 296 (Rev 2-89) 0 7'ejrae e UtISt 3v 298-102 GENERAL INSTRUCTIONS FOR COMPLETING SF 298 The Report Documentation Page (RDP) is usea in announcing and cataloging reports. 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