Definitive Study of Homogeneous Nucleation and Ion-Induced  Nucleation
{'Code': '07020000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CBET', 'LongName': 'Div Of Chem, Bioeng, Env, & Transp Sys'}}
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This research will measure rates of homogeneous nucleation for a                variety of vapors at various temperatures and supersaturations using a          thermal diffusion cloud chamber.  The influence of photo-induced ions           of controlled sign and concentration on the nucleation rate also will           be measured.  The theory for thermal diffusion cloud chambers will be           extended to account for vapor depletion and latent heat release                 associated with droplet formation and growth in order to allow data             interpretation at significantly higher nucleation rates than obtained           heretofore by this technique.                                                                                                                                   Acquisition of an extensive and consistent data base should enable a            critical test of theories for homogeneous nucleation rates which                sometimes differ from experimental rates by many orders of magnitude            and will guide modifications where necessary to these theories.                 Nucleation is an important phenomenon in a wide variety of engineering          and environmental applications.
{'FirstName': 'Joseph', 'LastName': 'Katz', 'PI_MID_INIT': 'L', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Joseph L Katz', 'EmailAddress': 'jlk@jhu.edu', 'NSF_ID': '000303417', 'StartDate': '03/01/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Johns Hopkins University', 'CityName': 'BALTIMORE', 'ZipCode': '212182608', 'PhoneNumber': '4439971898', 'StreetAddress': '3400 N CHARLES ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Maryland', 'StateCode': 'MD', 'CONGRESSDISTRICT': '07', 'CONGRESS_DISTRICT_ORG': 'MD07', 'ORG_UEI_NUM': 'FTMTDMBR29C7', 'ORG_LGL_BUS_NAME': 'THE JOHNS HOPKINS UNIVERSITY', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1415', 'Text': 'PMP-Particul&MultiphaseProcess'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8821009.xml'}