THIS PROPOSAL REQUESTS FUNDS TO EXTEND: (II) SECONDARY ION MASS SPECTROMETRY (SIMS) ANALYSIS OF GENESIS SAMPLES AND (III) OUR WORK EXPEDITING GENESIS SCIENCE WHICH WE REFER TO AS TECHNICAL ENABLING: (A) AIDING THE WORK OF OTHER GENESIS PIS (E.G. PROVIDING AND CALIBRATING IMPLANT STANDARDS) (B) DEVELOPING TECHNIQUES TO REMOVE CRASH-DERIVED SURFACE CONTAMINATION AND (C) SCIENCE COORDINATION MOST IMPORTANTLY INTERACTING WITH THE SOLAR PHYSICS COMMUNITY. (HEADINGS FROM PROPOSAL TEXT) GENESIS PROVIDES PRECISE ISOTOPIC AND ELEMENTAL ABUNDANCES BUT FRACTIONATIONS BETWEEN THE SUN AND THE SOLAR WIND (SW) MUST BE EVALUATED. ELEMENTAL FRACTIONATIONS APPEAR TO BE CORRELATED WITH FIRST IONIZATION POTENTIAL (FIP). SPACECRAFT DATA INDICATE ELEMENTS WITH FIP<9EV (MUCH OF THE PERIODIC TABLE) ARE UNFRACTIONATED. GENESIS DATA CHECK THIS WITH HIGHER ACCURACY. II. SPECIFIC ANALYSIS PROJECTS WHICH WE LEAD: (C) FE MG. THESE ARE ABUNDANT ELEMENTS WHICH SERVE AS REFERENCE ELEMENTS FOR OTHER GENESIS ELEMENTAL ANALYSIS AND MUST BE MEASURED TO THE HIGHEST POSSIBLE ACCURACY. FINAL FE AND MG FLUENCES ARE AVAILABLE. (D) NA K. THESE ARE AMONG THE LOWEST FIP ELEMENTS THUS CRITICAL IN DETERMINING THE EXTENT OF FIP FRACTIONATION. (E) MG ISOTOPES IN DIAMONDLIKE- C COLLECTORS. GENESIS DATA DEMONSTRATE ISOTOPIC FRACTIONATION BETWEEN THE SOLAR WIND AND SUN BUT DO NOT PROVIDE QUANTITATIVE ESTIMATES; THESE ARE POSSIBLE WITH MG ISOTOPES. (F) COMPARISON OF SOLAR CS ABUNDANCE WITH PREDICTIONS FROM S- AND R-PROCESS NUCLEOSYNTHESIS CONSTRAINS ION-NEUTRAL CHEMICAL FRACTIONATION DURING THE FORMATION OF THE SOLAR SYSTEM. (G) CA/AL ABUNDANCE. BACKSIDE DEPTH PROFILING TECHNIQUES HAVE BEEN USED TO AVOID SERIOUS SURFACE CONTAMINATION PROBLEMS FOR THIS IMPORTANT RATIO. (H) FE/MG IN SW REGIMES; ACE SPACECRAFT DATA PREDICT DIFFERENCES. (I) MN FLUENCE CHECKING LARGE DIFFERENCE BETWEEN CI AND PHOTOSPHERE. (J) RB FLUENCE. IN ADDITION TO BEING AN IMPORTANT LOW FIP ELEMENT THE COMBINATION OF GENESIS RB AND KR FLUENCES PROVIDES A CONSTRAINT ON POSSIBLE GAS/SOLID FRACTIONATION BETWEEN THE SUN AND THE SOLAR NEBULA. IIIA COLLABORATIONS WITH OTHER PIS: (A) H FLUENCE WITH G HUSS. DATA SHOW LESS FIP FRACTIONATION IN HIGHS SPEED SW RELATIVE TO BULK. (B) NI FLUENCE WITH SYNCHROTRON RADIATION GRAZING INCIDENCE X-RAY FLUORESCENCE WITH M. SCHMELING. PRELIMINARY DATA SUGGEST A SIGNIFICANTLY HIGHER NI FLUENCE THAN EXPECTED. (C) BR FLUENCE WITH A. MESHIK. (D) CL CO AND IR FLUENCES WITH K. NISHIIZUMI. AS SIDEROPHILE ELEMENTS NI CO AND IR PROVIDE A POSSIBLE CONSTRAINT ON METAL/SILICATE FRACTIONATIONS IN THE SOLAR NEBULA. CO AND IR ARE SIDEROPHILE ELEMENTS DIFFERING GREATLY IN MASS WHICH BY COMPARISON WITH CI ABUNDANCES CONSTRAINS THE POSSIBILITY OF HEAVY ELEMENT GRAVITATIONAL SETTLING OUT OF THE SOLAR CONVECTION ZONE. (E) SR SE FLUENCES WITH I. VERYOVKIN. AS WITH RB AND BR DATA FOR ELEMENTS IN THE MASS 80-90 RANGE PROVIDE A CONSTRAINT ON POSSIBLE GAS/SOLID FRACTIONATION BETWEEN THE SUN AND THE SOLAR NEBULA. (F) REGIME ANALYSIS OF CNO (WITH WIENS) TESTS THEORIES OF FIP FRACTIONATION. (G) RE AND OS ISOTOPES (WITH SHARMA). IIIB MEETING GENESIS SCIENCE OBJECTIVES REQUIRES ANALYSES OF LARGE (100 MM2) AREA SAMPLES. IN COLLABORATION WITH THE GENESIS CURATORIAL FACILITY AND OTHER PIS WE ARE DEVELOPING TECHNIQUES TO REMOVE CRASH-DERIVED PARTICULATE CONTAMINATION. FOCUSED STUDIES ON SPECIFIC SI SAMPLES WILL BE FINISHED THEN WORK WILL BEGIN ON DIAMOND-LIKE-C (DLC) AND SAPPHIRE COLLECTOR MATERIALS ESPECIALLY THE CONCENTRATOR DLC SAMPLE FOR WHICH BARE SI AREAS SHOULD PERMIT C ISOTOPE MEASUREMENTS. IIIC AT OUR REQUEST DATA FROM THE ACE SPACECRAFT HAVE BEEN REPROCESSED TO GIVE MORE ACCURATE ABUNDANCES AND NEW THEORIES FOR FIP FRACTIONATION ARE BEING DEVELOPED.