nuclear chemistry@indiana vic viola summer 2005 ()
TRANSCRIPT
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Nuclear Chemistry@Indiana
Vic Viola
Summer 2005 (http://nuchem.iucf.indiana.edu)
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• authored 175 journal publications
• 82 conference proceedings
• numerous talks at seminars, conferences, and workshops
• served as PhD advisor for 18 graduate students
• mentored 15 postdoctoral fellows
• Three undergrads won Undergraduate ACS award in Nuclear Chemistry
Vic as a prolific scientist
(see symposium brochure for details)
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Viola, V.E. Angular distributions from heavy-ion-induced fission. Ph.D. Thesis, University of California, Berkeley, 1961.
Despite his cosmopolitan outlook, Vic is without question a Midwesterner – after all he was born in Abilene, Kansas
He received an A.B in 1957 from the University of Kansas (but did you know he started out as an English major?)
He was awarded his Ph.D. in 1961 from the University of California, Berkeley (where he was active on many fronts…)
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Where does Vic do all that writing (including “Letters to the editor”) ?
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Vic and Nancy, relaxing in their backyard
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Always an experimentalist at heart
The equipment seems to change but Vic doesn’t…
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“Historically, chemists have played an active role in the study of nuclear interactions between complex nuclei. […]”
Vic is the quintessential interdisciplinary scientist
As a chemist, Vic has concerned himself not only with the reactions nuclei undergo (fission, damped reactions) but with their possible phase transition from a liquid to a gas.
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Time (years)
# of atoms
The way Vic looks
1986
20002004
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Time (years)
# of atoms
The way Vic looks
2004
From the slope of this line we can predict Vic will be doing well 20 years from now – but how about the other direction ?
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Vic is always blazing new trails. Here he is on the Appalachian Trail in 1978
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About to go out on a protest- the Berkeley days.
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Vic, we always knew you were a soldier at heart!
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Vic and sports
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Dave Bracken, LANL
Erin Renshaw
Kevin Morley, LANL
These are the students who built ISiS?
Vic’s nuclear family(students, postdocs, and collaborators)
Microsoft
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Vic’s “other” family
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Vic’s “other” family
Charley, Randy, and Gina trust that Dad will figure out how to operate this complex device.
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The ISiS adventure
Reproducing the condition of high temperature on earth
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Bringing Stars Down to Earth Victor Viola, Distinguished Professor of Chemistry, and Kris Kwiatowski, Senior Scientist in Chemistry, both at Indiana University Bloomington, and Lai Wan Woo (right to left), who served as a computer consultant in the design of the Indiana Silicon Sphere detector array (ISiS), are in front of the central control panels at the Indiana University Cyclotron Facility. In the foreground, the monitor screen shows a line drawing of the ISiS detector assembly.
Indiana University, Research & Creative ActivityApril 1998 Volume XXI Number 2
“…thermo physics of nuclei as mesoscopic clusters and of the process of liquid-vapor phase transition...”– I.Y. Lee
Left to right: Gary Fleener, John Dorsett, Kenny Bastin
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Nothing but the finest as ISiS goes to Saclay for its first experiment
Kris Kwiatkowski at SATURNE
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ISiS goes to Brookhaven National Lab (AGS)
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Themes in Vic’s research
1960 1970 1980 1990 2000
Fission
Damped Reactions
Non-equilibrium light particle emission
Multifragmentation and the nuclear
liquid-gas phase transition
Nucleosynthesis
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Probability for emitting one or more IMF exceeds probability for emitting none.
Charge distribution (Z) becomes flat.
Onset of an expansion
IMF Emission time becomes very
short
L. Beaulieu et al., PRL 84 5971 (2000)
Several quantities tell us that something unusual happens at E*/A=4-6 MeV for a Au nucleus
Liquid-gas Phase transition?
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… and the irony is … After 40 years we are returning to study fission, specifically the fission of N/Z exotic nuclei
K.-H. Schmidt, J. Benlliure, and A.R. JunghansNucl. Phys. A693, 169 (2001)
Moller, Madland, Sierk, and IwamotoNature 409, (2001) 785-790.
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Fission in the Era of Radioactive Beams
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Courtesy of Indiana University
December 2000, Vic is the recipient of the 2000 Tracy M. Sonneborn Award
http://broadcast.iu.edu/lectures/sonneborn
“I recognized a long time ago that if you can define a problem for students, give them the resources to work on that problem, you get remarkable results…” – Vic Viola, Tracy M. Sonneborn lecture Dec. 2000
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Thanks Vic!(from all the past and present members of the
Nuclear Chemistry group at Indiana)