THE PRIMARY OBJECTIVE OF THIS PROPOSAL IS TO GAIN A BETTER UNDERSTANDING OF THE ORIGIN OF KEY SHORT-LIVED RADIONUCLIDES IN THE EARLY SOLAR SYSTEM. THE PARTICULAR FOCUS OF THE PROPOSED WORK IS ON THE SHORT-LIVED RADIONUCLIDES 10BE AND 26AL WHOSE PRESENCE IN THE EARLY SOLAR SYSTEM CAN BE INFERRED FROM MEASUREMENTS OF SOME OF THE EARLIEST-FORMED SOLIDS I.E. THE CALCIUM-ALUMINUM-RICH INCLUSIONS (CAIS) IN PRIMITIVE METEORITES. THIS RESEARCH WILL PROVIDE CONSTRAINTS ON THE INITIAL SOLAR SYSTEM ABUNDANCES OF 10BE AND 26AL AND POTENTIAL CORRELATIONS BETWEEN THE TWO SYSTEMS ALLOWING US TO GAIN FURTHER INSIGHT INTO THEIR ORIGINS. WE PROPOSE TO UTILIZE SEVERAL ANALYTICAL TECHNIQUES TO ACCOMPLISH THE RESEARCH OBJECTIVES. SPECIFICALLY THE ANALYTICAL INSTRUMENTATION INCLUDES A JEOL JXA-8520F ELECTRON MICROPROBE LOCATED AT ARIZONA STATE UNIVERSITY (ASU) FOR CAI CHARACTERIZATION A CAMECA IMS-6F SECONDARY ION MASS SPECTROMETER AT ASU FOR IN SITU BE-B ISOTOPE MEASUREMENTS AND A CAMECA IMS-1280 SECONDARY ION MASS SPECTROMETER AT UNIVERSITY OF WISCONSIN- MADISON FOR IN SITU AL-MG ISOTOPE ANALYSES. THE PROPOSED WORK ADDRESSES ONE OF THE OBJECTIVES OF NASA S STRATEGIC PLAN (2014) TO ASCERTAIN THE CONTENT ORIGIN AND EVOLUTION OF THE SOLAR SYSTEM AND THE POTENTIAL FOR LIFE ELSEWHERE. SPECIFICALLY THE PROPOSED INVESTIGATIONS ADDRESS ONE OF THE GOALS OF NASA S PLANETARY SCIENCE RESEARCH PROGRAM (DESCRIBED IN CHAPTER 4.3 OF NASA S 2014 SCIENCE PLAN) TO ADVANCE THE UNDERSTANDING OF HOW THE CHEMICAL AND PHYSICAL PROCESSES IN THE SOLAR SYSTEM OPERATE INTERACT AND EVOLVE.