RUI:  Hyperfine Structure Effects in Hydrogen Atom                Collisions (Physics)
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An experimental test will be made of theory which                          includes hyperfine structure effects in low energy electron                     spin exchange collisions between ground state hydrogen atoms.                   Measurements of hyperfine-induced frequency-shift cross                         sections will be made at 0.5 Kelvin using a superfluid liquid                   helium surface atomic hydrogen maser (at the University of                      British Columbia) and at 10 Kelvin with a new solid neon                        surface hydrogen maser (at Williams College).  Results will                     also test the degree to which collisions between hydrogen atoms                 may limit the stability of cryogenic hydrogen maser frequency                   standards.
{'FirstName': 'Stuart', 'LastName': 'Crampton', 'PI_MID_INIT': 'B', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Stuart B Crampton', 'EmailAddress': None, 'NSF_ID': '000322876', 'StartDate': '07/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Williams College', 'CityName': 'WILLIAMSTOWN', 'ZipCode': '012672600', 'PhoneNumber': '4135974352', 'StreetAddress': '880 MAIN ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'MA01', 'ORG_UEI_NUM': 'JVZEJJ6N5EM8', 'ORG_LGL_BUS_NAME': 'PRESIDENT & TRUSTEES OF WILLIAMS COLLEGE', 'ORG_PRNT_UEI_NUM': 'JVZEJJ6N5EM8'}
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[{'Code': '1241', 'Text': 'AMO Experiment/Atomic, Molecul'}, {'Code': '9120', 'Text': 'CROSS-DIRECTORATE PROGRAMS'}]
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