• PHD Nuclear Physics, Catholic University of Louvain - belgium 1978
World Area Of Focus:
• International 50%-74%
Languages:
• Dutch (Flemish) (native/bilingual proficiency) • French (native/bilingual proficiency)
Specialization:
My main research interests lie in the study of nuclear structure at the limits of stability, in high-Z nuclei and in neutron-rich nuclei. Most recently, we have initiated a program to investigate shell structure in neutron-rich nuclei of the 48Ca - 78Ni region by combining a number of techniques and facilities. Our approach is one where we combine beta decay and intermediate-energy Coulomb excitation measurements performed at the NSCL with deep inelastic reactions or fusion-evaporation with radioactive targets carried out with Gammasphere at ATLAS. We also exploit the gamma-ray beams available at the HIgS facility at TUNL. Another program at ATLAS uses Gammasphere to carry out so-called "unsafe" Coulomb excitation experiments on long-lived actinide nuclei in order to determine the important degrees of freedom responsible for the various excitations as a function of spin. I am also fascinated by the impact of structure and reaction dynamics on nuclear astrophysics processes and am participating in measurements in this area. My interests also include the development of new instrumentation and I was actively involved in the development of the Gammasphere and GRETINA gamma-ray arrays. I am a co-author of more than 600 publications in refereed scientific journals, and have presented over 100 invited talks at national and international workshops and conferences.
Relevant Experience:
• 2017-2018 Invited Professor, Department of Physics and Astronomy, University of North
Carolina at Chapel Hill on sabbatical leave from ANL
• 2008-2017 Director, Physics Division, Argonne National Laboratory • 2000-2007 Scientific Director of the ATLAS facility and Associate Director, Physics Division, Argonne National Laboratory • 1994-2000 Senior Scientist, Argonne National Laboratory, U.S.A.
• 1984-1993 Scientist, Argonne National Laboratory, U.S.A.
• 1981-1984 Assistant Scientist, Argonne National Laboratory, U.S.A. • 1978-1980 Research Associate, KVI - University of Groningen, The Netherlands
Distinctions:
• 2017-2018 • Vice-Chair, Division of Nuclear Physics, American Physical Society, 2017
• Chair-Elect, Division of Nuclear Physics, American Physical Society, 2018
• 2016-2018 • Member of the RIKEN Nishina Center Advisory Committee, 2016 - present
• Member of the Program Advisory Committee for Physics experiments with the Separated-Sector Cyclotron at iThemba Labs, South Africa (2017 – present)
• Member of the Program Advisory Committee for Nuclear Physics Experiments at the RIKEN Rare Ion Beam Factory, Japan (2017 – present)
Dissertations and Theses Supervised in Past 5 Years:
3
Relevant Courses Taught:
• PHYA 543 Nuclear Physics
Recent Publications:
• 2018 A NOVEL J = 1 SEQUENCE IN 78Ge: POSSIBLE EVIDENCE FOR TRIAXIALITY
A. M. Forney, W. B. Walters, C. J. Chiara, R. V. F. Janssens, A. D. Ayangekaa,
J. Sethi, J. Harker, M. Alcorta, M. P. Carpenter, G. Gürdal, C. R. Hoffman,
B. P. Kay, F. G. Kondev, T. Lauritsen, C. J. Lister, E. A. McCutchan, A. M. Rogers,
D. Seweryniak, I. Stefanescu, and S. Zhu
Phys. Rev. Lett. 120, 212501 (2018)
• 2018 ISOMER DEPLETION AS EXPERIMENTAL EVIDENCE OF NUCLEAR EXCITATION BY ELECTRON CAPTURE
C. J. Chiara, J. J. Carroll, M. P. Carpenter, J. P. Greene, D. J. Hartley,
R. V. F. Janssens, G. J. Lane, J. C. Marsh, D. A. Matters, M. Polasik,
J. Rzadkiewicz, D. Seweryniak, S. Zhu, S. Bottoni, A. B. Hayes,
and S. A. Karamian
Nature 554, 216 (2018)
• 2017 DIRECT EVIDENCE FOR OCTUPOLE DEFORMATION IN 146Ba AND THE ORIGIN OF LARGE E1 MOMENT VARIATIONS IN REFLECTION–ASYMMETRIC NUCLEI
B. Bucher, S. Zhu, C. Y. Wu, R. V. F. Janssens, R. N. Bernard, L. M. Robledo,
T. R. Rodriguez, D. Cline, A. B. Hayes, A. D. Ayangeakaa, M. Q. Buckner,
C. M. Campbell, M. P. Carpenter, J. A. Clark, H. L. Crawford, H. M. David,
C. Dickerson, J. Harker, C.R. Hoffman, B. P. Kay, F. G. Kondev, T. Lauritsen,
A. O. Macchiavelli, R. C. Pardo, G. Savard, D. Seweryniak, and R. Vondrasek
Phys. Rev. Lett. 118, 152504 (2017)
• 2017 TRIAXIALITY NEAR THE 110Ru GROUND STATE FROM COULOMB EXCITATION
D. T. Doherty, J. M. Allmond, R. V. F. Janssens, W. Korten, S. Zhu, M. Zielińska,
D. C. Radford, A. D. Ayangeakaa, B. Bucher, J. C. Batchelder, C. W. Beausang,
C. Campbell, M. P. Carpenter, D. Cline, H. L. Crawford, H. M. David,
J. P. Delaroche, C. Dickerson, P. Fallon, A. Galindo-Uribarri, F. G. Kondev,
J. L. Harker, A. B. Hayes, M. Hendricks, P. Humby, M. Girod, C. J. Gross,
M. Klintefjord, K. Kolos, G. J. Lane, T. Lauritsen, J. Libert, A. O. Macchiavelli,
P.J. Napiorkowski, E. Padilla-Rodal, R. Pardo, W. Reviol, D. G. Sarantites,
G. Savard, D. Seweryniak, J. Srebrny, R. Varner, R. Vondrasek, A. Wiens,
E. Wilson, J. L. Wood, and C. Y. Wu
Phys. Lett. B 766, 334 (2017)
• 2016 SHAPE COEXISTENCE AND THE ROLE OF AXIAL ASYMMETRY IN 72Ge
A. D. Ayangeakaa, R. V. F. Janssens, C. Y. Wu, J. M. Allmond, J. L. Wood, S. Zhu,
M. Albers, S. Almaraz-Calderon, B. Bucher, M. P. Carpenter, C. J. Chiara,
D. Cline, H. L. Crawford, H. M. David, J. Harker, A. B. Hayes, C. R. Hoffman,
B. P. Kay, K. Kolos, A. Korichi, T. Lauritsen, A. O. Macchiavelli, A. Richard,
D. Seweryniak, and A. Wiens
Phys. Lett. B 754, 254 (2016)
• 2016 ATLAS WITH CARIBU: A LABORATORY PORTRAIT
Richard C. Pardo, Guy Savard and Robert V. F. Janssens
Nuclear Physics News 26, 6 (2016)
• 2009 UNEXPECTED DOUBLY MAGIC NUCLEUS
R. V. F. Janssens
Nature 459, 1069 (2009)
• 2005 ELUSIVE MAGIC NUMBERS
Robert V. F. Janssens
Nature 435, 897 (2005)
• 2002 STRUCTURE OF 52,54Ti AND SHELL CLOSURES IN NEUTRON–RICH NUCLEI ABOVE 48Ca
R. V. F. Janssens, B. Fornal, P. F. Mantica, B. A. Brown, R. Broda,
P. Bhattacharyya, M. P. Carpenter, M. Cinausero, P. J. Daly, A. D. Davies,
T. Glasmacher, Z. W. Grabowski, D. E. Groh, M. Honma, F. G. Kondev, W. Królas,
T. Lauritsen, S. N. Liddick, S. Lunardi, N. Marginean, T. Mizusaki, D. J. Morrissey,
A. C. Morton, W. F. Mueller, T. Otsuka, T. Pawlat, D. Seweryniak, H. Schatz,
A. Stolz, S. L. Tabor, C. A. Ur, G. Viesti, I. Wiedenhöver, and J. Wrzesiński
Phys. Lett. B 546, 55 (2002)
• 1991 SUPERDEFORMED NUCLEI
R. V. F. Janssens and T. L. Khoo
Ann. Rev. Nucl. Part. Sci. 41, 321 (1991)
• 1989 OBSERVATION OF SUPERDEFORMATION IN 191Hg
E. F. Moore, R. V. F. Janssens, R. R. Chasman, I. Ahmad, T. L. Khoo,
F. L. H. Wolfs, D. Ye, K. B. Beard, U. Garg, M. W. Drigert, Ph. Benet,
Z. W. Grabowski, and J. A. Cizewski
Phys. Rev. Lett. 63, 364 (1989)
Searches are not case-sensitive.
Enclosing two or more words in double quotes will return
only faculty profiles containing the quoted terms in the
requested order (e.g. a search for "Public Health" will
only return faculty profiles that contain the phrase
'Public Health'.)
Use 'AND' in keyword box to search for words that appear
in any order in a faculty profile (e.g. a search for
'Public AND Health' will return faculty profiles that
contain both the individual words 'Public' and
'Health.')
Using 'OR' in keyword box will broaden your search by
returning faculty profiles that contain keywords on
either side of the word 'OR' (e.g. a search for 'Public
OR Health' will return faculty profiles that contain
either one or both of the words 'Public' and 'Health.' )
A shortened form of your keyword will further broaden
your search (e.g. a search for 'demo' will return
faculty profiles that contain words begin with 'demo,'
such as 'demographic', 'democratic'.)
If search terms are entered without quotes, they are
treated as if a logical 'OR' was placed between each
term. For example, a search for 'Public Health Malaysia'
will return faculty profiles that contain the individual
words 'Public' and/or 'Health' and/or 'Malaysia.'
Quickly enter the first few letters of the faculty last name.
Select the faculty name you are searching for from the
result list.
