Precise Multiphoton Spectroscopy of Small Molecules and     Atomic Helium (Physics)
{'Code': '03010100', 'Directorate': {'Abbreviation': 'MPS', 'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'Abbreviation': 'PHY', 'LongName': 'Division Of Physics'}}
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A program of high resolution measurements on simple atoms               and molecules will be continued, concentrating especially on the                two.electron systems molecular hydrogen and atomic helium.  The                 experimental methods involve multiphoton excitation of both                     ground state and metastable species.  A pulse.amplified cw dye                  laser is used to obtain the high powers required for multiphoton                excitation while retaining high resolution.  The dissociation                   energy and ionization potential of hydrogen will be determined to               a new accuracy, and improved measurements will be made of the                   structure of helium.  These measurements will provide the first                 stringent tests of calculations of quantum electrodynamic effects               in the ground states of two.electron systems.  Microwave.optical                double resonance will be used to precisely measure transitions                  between high Rydberg states.                                                            A major focus on this research will be the interaction of               excited states in hydrogen with the ionization and dissociation                 continua, including the effects of doubly excited states.  The                  decay of Rydberg states will be studied both with and without                   external electric fields.  Work will continue on the                            photodissociation of hydrogen very near threshold, which yields                 detailed information on long.range interactions between atoms.
{'FirstName': 'Edward', 'LastName': 'Eyler', 'PI_MID_INIT': 'E', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Edward E Eyler', 'EmailAddress': 'eyler@phys.uconn.edu', 'NSF_ID': '000275777', 'StartDate': '12/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Yale University', 'CityName': 'NEW HAVEN', 'ZipCode': '065113572', 'PhoneNumber': '2037854689', 'StreetAddress': '150 MUNSON ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Connecticut', 'StateCode': 'CT', 'CONGRESSDISTRICT': '03', 'CONGRESS_DISTRICT_ORG': 'CT03', 'ORG_UEI_NUM': 'FL6GV84CKN57', 'ORG_LGL_BUS_NAME': 'YALE UNIV', 'ORG_PRNT_UEI_NUM': 'FL6GV84CKN57'}
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{'Code': '1241', 'Text': 'AMO Experiment/Atomic, Molecul'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8717051.xml'}