Low Energy Positron Diffraction and Positron Re-emission    Microscopy Experiments
{'Code': '03070003', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'DMR', 'LongName': 'Division Of Materials Research'}}
{'SignBlockName': 'H. Hollis Wickman', 'PO_EMAI': None, 'PO_PHON': None}
In their research they will, (1) compare low energy electron and                positron diffraction (LEED and LEPD) from Gallium Arsenic(110),                 (2) upgrade positron re-emission microscope (PRM) from its 300 nm               resolution to a resolution of 1nm, and (3) observe thermally                    activated and radiation damage produced monovacancies in metals.                The sensitivity of the PRM to defects will be used.  They will                  also test whether LEPD is theoretically superior to LEED and                    incorporate a new method a producing slow positron beams.
{'FirstName': 'Karl', 'LastName': 'Canter', 'PI_MID_INIT': 'F', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Karl F Canter', 'EmailAddress': 'canter@brandeis.edu', 'NSF_ID': '000262945', 'StartDate': '02/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Brandeis University', 'CityName': 'WALTHAM', 'ZipCode': '024532728', 'PhoneNumber': '7817362121', 'StreetAddress': '415 SOUTH ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '05', 'CONGRESS_DISTRICT_ORG': 'MA05', 'ORG_UEI_NUM': 'MXLZGAMFEKN5', 'ORG_LGL_BUS_NAME': 'BRANDEIS UNIVERSITY', 'ORG_PRNT_UEI_NUM': 'JLC9RHNT9479'}
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