Experimental Nuclear Physics Currently in Budapest, Hungary
Research Interests
My major experimental work at this time is the investigation of the
level structure of the even-A tin isotopes 116,120,124Sn using the
(n,n'gamma) reaction. I am searching for evidence of multi-phonon vibrational
excitations, as well as other collective excitations, embedded in a
background of shell model states. Since we can determine the position of all
the levels up to 3.5 MeV excitation, we can also make an analysis of the
density of these levels and compare it to recent level-density models.
I am embarking on a program to investigate the fission
properties of actinides when bombarded by cold neutrons at the reactor
of the KFKI in Budapest. The level structure of the fission products
will also be studied.
Education
B.S., Physics, Caltech (1952)
Ph.D., Experimental Nuclear Physics, Columbia (1959)
Selected Recent Publications
Z. Gacsi , M. Csatlos, A. Krasznahorkay, D. Sohler, J. Gulyas, J.
Timar, M. Hunyadi, J.L. Weil, and J. van Klinken, "Low-lying Excited K=0
Bands in 238U", Phys. Rev. C 64, 047303, (2001).
A. Marinov, S. Gelberg, D. Kolb, and J.L. Weil; "Strongly Enhanced Low
Energy Alpha-particle Decay in Heavy Actinide Nuclei and Long-lived
Superdeformed and Hyperdeformed Isomeric States", Int. J. of Mod. Phys. E10,
209 (2001).
P.P. Ember, T. Belgya, J.L. Weil, and G.L. Molnar; "Coincidence
Measurement Setup for PGAA and Nuclear Structure Studies", Appl. Rad. and
Isotopes 57, 573 (2002).
J. Weil, et al.,
"120Sn Level Scheme and Lifetimes",
in preparation (2001).
G. Chen, M. Li, J. L. Weil and M. T. McEllistrem,
"Neutron scattering in 140,142Ce and strengths
of neutrons and protons in collective levels of 140Ce",
Phys. Rev. C63 014606 (2001).
A.V. Ignatyuk, J.L. Weil, S. Raman, and S. Kahane,
"Density of Discrete Levels in 116Sn",
Phys. Rev. C 47, 1504 (1993).
S. Raman, et al.,
"Nearly Complete 116Sn Level Scheme Below 4.3 MeV",
Phys. Rev. C 43, 521 (1991).
