IN THIS PROPOSAL WE EXAMINE TURBULENT REGIONS OF ION DIFFUSION REGIONS IN DETAIL WITH THE MAGNETOSPHERIC MULTISCALE (MMS) MISSION TO UNDERSTAND THE NATURE OF TURBULENCE ASSOCIATED WITH MAGNETIC RECONNECTION AND THE PATH THROUGH WHICH ELECTRONS ARE ENERGIZED. THE MMS MISSION IS IDEALLY SUITED TO CONDUCT THIS STUDY. THE TIGHT TETRAHEDRAL FORMATION OF THE FOUR SPACECRAFT IN THE MAGNETOTAIL REGION OF INTEREST AS WELL AS ITS HIGH TIME RESOLUTION MAKE THE MISSION AN IDEAL OBSERVATORY FOR PLASMA TURBULENCE AS WELL AS THE KINETIC PROCESSES THAT ARE ASSOCIATED WITH IT. MMS HAS COLLECTED ADEQUATE BURST DATA IN THESE REGIONS TO PERFORM THE STUDY. THE CONFIGURATION OF THE SPACECRAFT WITH SEPARATIONS AS LOW AS 10 KM ALLOW FOR EXCELLENT OBSERVATION OF TEMPORAL AND SPATIAL VARIATIONS IN MAGNETIC FIELD NECESSARY FOR PLASMA TURBULENCE ANALYSIS. WE WILL PERFORM A STATISTICAL STUDY OF THESE TURBULENT REGIONS AND MEASURE THE PARTICLE ACCELERATION AND DISSIPATION RATES. MMS POVIDES FOUR-POINT 3-D ELECTRIC FIELD OBSERVATIONS AND ACCURATE MEASUREMENTS OF THE CURRENT VIA THE CURLOMETER TECHNIQUE DUE TO SPACECRAFT SEPARATIONS LESS THAN ELECTRON DEBYE LENGTH. THESE MEASUREMENTS SUPPORT THE CALCULATION OF THE ENERGY EXCHANGE BETWEEN FIELDS AND PARTICLES WITH UNPRECEDENTED TEMPORAL RESPONSE AND ACCURACY WHICH ENABLES A DETAILED INVESTIGATION OF TURBULENT DISSIPATION AND ACCELERATION.