{"id":"https://openalex.org/A5113777876","orcid":null,"observed_orcids":[],"display_name":"Rolf H. Siemssen","raw_author_names":["R H Siemssen","R. H. SIEMSSEN","R. H. Siemssen","R. H. Siemssen ~b","R. Siemssen","R.H Siemssen","R.H. SIEMSSEN","R.H. Siemssen","R.H.Siemssen","Rh Siemssen","Rolf H. Siemssen","Rolf Siemssen","SIEMSSEN, RA","SIEMSSEN, RH","Siemssen, R H","Siemssen, R.","Siemssen, R. H.","Siemssen, R.H.","Siemssen, Rolf H.","Siemssen, Rudolf"],"full_name":"Rolf H. Siemssen","works_count":256,"cited_by_count":5269,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":41,"i10_index":117},"ids":{"openalex":"https://openalex.org/A5113777876","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I10052268","ror":"https://ror.org/00hpz7z43","display_name":"New Mexico State University","country_code":"US","type":"education","lineage":["https://openalex.org/I10052268"]},"years":[1978]},{"institution":{"id":"https://openalex.org/I111979921","ror":"https://ror.org/000e0be47","display_name":"Northwestern University","country_code":"US","type":"education","lineage":["https://openalex.org/I111979921"]},"years":[1978]},{"institution":{"id":"https://openalex.org/I114457229","ror":"https://ror.org/01swzsf04","display_name":"University of Geneva","country_code":"CH","type":"education","lineage":["https://openalex.org/I114457229"]},"years":[1997]},{"institution":{"id":"https://openalex.org/I1282105669","ror":"https://ror.org/05gvnxz63","display_name":"Argonne National Laboratory","country_code":"US","type":"facility","lineage":["https://openalex.org/I1282105669","https://openalex.org/I1330989302","https://openalex.org/I39565521","https://openalex.org/I40347166"]},"years":[2005,2004,2003,2002,1999,1989,1987,1985,1980,1979,1978,1974,1973,1972,1971,1970,1967,1966,1965]},{"institution":{"id":"https://openalex.org/I1294671590","ror":"https://ror.org/02feahw73","display_name":"Centre National de la Recherche Scientifique","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},"years":[1998,1994]},{"institution":{"id":"https://openalex.org/I131249849","ror":"https://ror.org/00ysfqy60","display_name":"Oregon State University","country_code":"US","type":"education","lineage":["https://openalex.org/I131249849"]},"years":[1978]},{"institution":{"id":"https://openalex.org/I1343871089","ror":"https://ror.org/01e41cf67","display_name":"Los Alamos National Laboratory","country_code":"US","type":"facility","lineage":["https://openalex.org/I1330989302","https://openalex.org/I1343871089","https://openalex.org/I198811213","https://openalex.org/I4210120050"]},"years":[1978]},{"institution":{"id":"https://openalex.org/I159176309","ror":"https://ror.org/00g30e956","display_name":"Universit\u00e4t Hamburg","country_code":"DE","type":"education","lineage":["https://openalex.org/I159176309"]},"years":[1968,1965,1964,1958]},{"institution":{"id":"https://openalex.org/I169381384","ror":"https://ror.org/012p63287","display_name":"University of Groningen","country_code":"NL","type":"education","lineage":["https://openalex.org/I169381384"]},"years":[2017,2008,2003,2000,1999,1998,1997,1996,1995,1994,1993,1991,1989,1987,1985,1984,1983,1982,1981,1980,1979,1978,1977,1976,1974]},{"institution":{"id":"https://openalex.org/I169556180","ror":"https://ror.org/02k8cbn47","display_name":"GSI Helmholtz Centre for Heavy Ion Research","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1305996414","https://openalex.org/I169556180"]},"years":[1997,1994]},{"institution":{"id":"https://openalex.org/I17974374","ror":"https://ror.org/036rp1748","display_name":"Universidade de S\u00e3o Paulo","country_code":"BR","type":"education","lineage":["https://openalex.org/I17974374"]},"years":[1993]},{"institution":{"id":"https://openalex.org/I188538660","ror":"https://ror.org/02ttsq026","display_name":"University of Colorado Boulder","country_code":"US","type":"education","lineage":["https://openalex.org/I188538660"]},"years":[1978]},{"institution":{"id":"https://openalex.org/I2738703131","ror":"https://ror.org/00jjx8s55","display_name":"Commissariat \u00e0 l'\u00c9nergie Atomique et aux \u00c9nergies Alternatives","country_code":"FR","type":"government","lineage":["https://openalex.org/I2738703131"]},"years":[1998,1994]},{"institution":{"id":"https://openalex.org/I2802236040","ror":"https://ror.org/00jc20583","display_name":"University of Colorado System","country_code":"US","type":"education","lineage":["https://openalex.org/I2802236040"]},"years":[1978]},{"institution":{"id":"https://openalex.org/I32971472","ror":"https://ror.org/03v76x132","display_name":"Yale University","country_code":"US","type":"education","lineage":["https://openalex.org/I32971472"]},"years":[1973,1969,1968,1967]},{"institution":{"id":"https://openalex.org/I4210106918","ror":"https://ror.org/01n78t774","display_name":"Institute of Nuclear Physics, Polish Academy of Sciences","country_code":"PL","type":"facility","lineage":["https://openalex.org/I4210106918","https://openalex.org/I99542240"]},"years":[1980]},{"institution":{"id":"https://openalex.org/I4210116497","ror":"https://ror.org/02pq29p90","display_name":"Istituto Nazionale di Fisica Nucleare, Sezione di Catania","country_code":"IT","type":"facility","lineage":["https://openalex.org/I160013858","https://openalex.org/I4210116497"]},"years":[1993]},{"institution":{"id":"https://openalex.org/I4210119109","ror":"https://ror.org/02k40bc56","display_name":"Indiana University Bloomington","country_code":"US","type":"education","lineage":["https://openalex.org/I4210119109","https://openalex.org/I592451"]},"years":[1972]},{"institution":{"id":"https://openalex.org/I4210133362","ror":"https://ror.org/03fd77x13","display_name":"Institut National de Physique Nucl\u00e9aire et de Physique des Particules","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I4210133362"]},"years":[1998,1994]},{"institution":{"id":"https://openalex.org/I4210144781","ror":"https://ror.org/042dc0x18","display_name":"Grand Acc\u00e9l\u00e9rateur National d'Ions Lourds","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I2738703131","https://openalex.org/I4210113668","https://openalex.org/I4210133362","https://openalex.org/I4210144781"]},"years":[1998,1996,1995,1994,1993]},{"institution":{"id":"https://openalex.org/I4654613","ror":"https://ror.org/039bjqg32","display_name":"University of Warsaw","country_code":"PL","type":"education","lineage":["https://openalex.org/I4654613"]},"years":[1995]},{"institution":{"id":"https://openalex.org/I5388228","ror":"https://ror.org/022kthw22","display_name":"University of Rochester","country_code":"US","type":"education","lineage":["https://openalex.org/I5388228"]},"years":[1967]},{"institution":{"id":"https://openalex.org/I74775410","ror":"https://ror.org/008zs3103","display_name":"Rice University","country_code":"US","type":"education","lineage":["https://openalex.org/I74775410"]},"years":[1964]},{"institution":{"id":"https://openalex.org/I74801974","ror":"https://ror.org/057zh3y96","display_name":"The University of Tokyo","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]},"years":[1995]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10093","display_name":"Nuclear physics research studies","count":243,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10224","display_name":"Quantum Chromodynamics and Particle Interactions","count":99,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10527","display_name":"High-Energy Particle Collisions Research","count":94,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13458","display_name":"Astronomical and nuclear sciences","count":94,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10523","display_name":"Atomic and Molecular Physics","count":75,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T13458","display_name":"Astronomical and nuclear sciences","value":0.0006057,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10093","display_name":"Nuclear physics research studies","value":0.0003897,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13209","display_name":"Cold Fusion and Nuclear Reactions","value":0.0003008,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10527","display_name":"High-Energy Particle Collisions Research","value":0.0002455,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10224","display_name":"Quantum Chromodynamics and Particle Interactions","value":0.0001285,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.9797766804695129},{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.9021323323249817},{"id":"185544564","wikidata":"https://www.wikidata.org/wiki/Q81197","display_name":"Nuclear physics","score":0.7906621694564819},{"id":"184779094","wikidata":"https://www.wikidata.org/wiki/Q26383","display_name":"Atomic physics","score":0.7867022156715393},{"id":"62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","score":0.24310000240802765}],"counts_by_year":[{"year":1958,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1964,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1965,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1966,"works_count":6,"oa_works_count":1,"cited_by_count":0},{"year":1967,"works_count":9,"oa_works_count":0,"cited_by_count":0},{"year":1968,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":1969,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1970,"works_count":9,"oa_works_count":0,"cited_by_count":0},{"year":1971,"works_count":8,"oa_works_count":3,"cited_by_count":0},{"year":1972,"works_count":8,"oa_works_count":0,"cited_by_count":0},{"year":1973,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1974,"works_count":7,"oa_works_count":0,"cited_by_count":0},{"year":1976,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1977,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1978,"works_count":8,"oa_works_count":1,"cited_by_count":0},{"year":1979,"works_count":6,"oa_works_count":2,"cited_by_count":0},{"year":1980,"works_count":6,"oa_works_count":2,"cited_by_count":0},{"year":1981,"works_count":7,"oa_works_count":3,"cited_by_count":0},{"year":1982,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":1983,"works_count":6,"oa_works_count":1,"cited_by_count":0},{"year":1984,"works_count":8,"oa_works_count":3,"cited_by_count":0},{"year":1985,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":1986,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1987,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":1988,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":7,"oa_works_count":3,"cited_by_count":0},{"year":1990,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1991,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":8,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":20,"oa_works_count":11,"cited_by_count":0},{"year":1995,"works_count":17,"oa_works_count":2,"cited_by_count":0},{"year":1996,"works_count":8,"oa_works_count":1,"cited_by_count":0},{"year":1997,"works_count":7,"oa_works_count":5,"cited_by_count":0},{"year":1998,"works_count":6,"oa_works_count":3,"cited_by_count":0},{"year":1999,"works_count":12,"oa_works_count":8,"cited_by_count":0},{"year":2000,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2001,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2002,"works_count":5,"oa_works_count":3,"cited_by_count":0},{"year":2003,"works_count":10,"oa_works_count":5,"cited_by_count":0},{"year":2004,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2005,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2008,"works_count":6,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":141},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":84},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":68},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":108},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":125},{"year":2017,"works_count":2,"oa_works_count":1,"cited_by_count":67},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":68},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":70},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":54},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":57},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":62},{"year":2023,"works_count":2,"oa_works_count":2,"cited_by_count":85},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":45},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":51},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":52}],"display_name_alternatives":["R H Siemssen","R. H. SIEMSSEN","R. H. Siemssen","R. H. Siemssen ~b","R. Siemssen","R.H Siemssen","R.H. SIEMSSEN","R.H. Siemssen","R.H.Siemssen","Rh Siemssen","Rolf H. Siemssen","Rolf Siemssen","SIEMSSEN, RA","SIEMSSEN, RH","Siemssen, R H","Siemssen, R.","Siemssen, R. H.","Siemssen, R.H.","Siemssen, Rolf H.","Siemssen, Rudolf"],"block_key":"r siemssen","works_api_url":"https://api.openalex.org/works?filter=author.id:A5113777876","updated_date":"2026-11-08T12:57:04","created_date":"2016-06-24T00:00:00"}