greta.lbl.gov
Community - GRETA
http://greta.lbl.gov/working-group
Design and Technology IP. GRETINA / GRETA Lead Institution. Lawrence Berkeley National Laboratory. GRETINA / GRETA Committees and Advisory Groups. GRETINA Advisory Committee (GAC). David Radford, Oak Ridge National Laboratory. Con Beausang, University of Richmond. Mike Carpenter, Argonne National Laboratory. Partha Chowdhury, University of Massachusetts, Lowell. Mario Cromaz , Lawrence Berkeley National Laboratory. Mark Riley, Florida State University. Dirk Weisshaar , Michigan State University / NSCL.
greta.lbl.gov
shapes - GRETA
http://greta.lbl.gov/science/shapes
Design and Technology IP. Shape and Configuration Coexistence - The Case From N=20 to N=28. A) Simulated ground-state rotational band in. Mg, based on calculated energy levels [Pov13] and populated in multi-nucleon removal from. Ar at 197 MeV/u at FRIB, using GRETA and the proposed high-rigidity spectrometer (HRS). (b) SImulated spectrum gated on the transitions from the 2. Mg, showing identification up to the 10. Mg, a 0.05% branch. Mg [Doo13, Cra14]. Aimed at identifying signatures of collective modes,...
greta.lbl.gov
shell structure - GRETA
http://greta.lbl.gov/science/shell-structure
Design and Technology IP. Evolution of shell structure far from stability. The shell structure of the atomic nucleus near stability is well established. The average nuclear potential is. Well parameterized and phenomenological frameworks. Describe many experimental facts. As one moves away. From stability, however, decreasing nucleon binding. Energy and the large proton-to-neutron asymmetry lead. To modifications in the nuclear potential and the spin-isospin. Component of the nucleon-nucleon interaction.
greta.lbl.gov
spin - GRETA
http://greta.lbl.gov/science/spin
Design and Technology IP. At the limits of spin: Hyperdeformed nuclei. Simulations compared to data for the example of the highly-deformed rotational band in 108. Cd illustrating GRETA’s gain in resolving power to observe weakly-populated, high angular-momentum rotational states The top panel shows the measured Gammasphere spectrum [Cla01] (black) together with the corresponding simulated spectrum (red). This is the observational limit for current detector arrays - a band with intensity of 10 -4. This st...
greta.lbl.gov
Science - GRETA
http://greta.lbl.gov/science
Design and Technology IP. The scientific case for the full 4π GRETA has been spelled out in the. Submitted as input to the. August 2014 Low-Energy Community Town Meeting. The physics cases span the nuclear chart from the detailed measurements in the lightest isotopes at the edge of stability where nucleons are barely bound, to the very heaviest elements. Physics Opportunities with GRETA. How does subatomic matter organize itself and what phenomena emerge? Evolution of shell structure far from stability.
greta.lbl.gov
Documents & Links - GRETA
http://greta.lbl.gov/documents
Design and Technology IP. GRETINA / GRETA Links. GRETINA Users Executive Committee (GUEC). GRETINA Software Working Group (GSWG). The European gamma-ray tracking array. Mar 29, 2015, 7:50 AM. Aug 28, 2015, 9:01 AM. Aug 28, 2015, 9:01 AM. Your use of this site is subject to our security and privacy policies. A US Department of Energy National Laboratory Operated by the University of California.
greta.lbl.gov
edm - GRETA
http://greta.lbl.gov/science/edm
Design and Technology IP. Studies of octuple collectivity to guide searches for physics beyond the Standard Model. Upper panel: Simulated spectrum for. Rn Coulomb excitation carried out at FRIB using GRETA at 4.5 MeV/u. Lower panel: Simulated spectrum of. Rn from GRETA at FRIB gated on the 7. 276 keV transition (see [Gaf13] for the best possible measurement to date). Despite its spectacular phenomenological success, it is. Recognized that the Standard Model is incomplete and. Ard Model [Eng13, Pos05].
greta.lbl.gov
r-Process - GRETA
http://greta.lbl.gov/science/r-process
Design and Technology IP. The origin of the elements heavier than Iron - the r-process. The rapid neutron-capture process (r-process) is believed to account for roughly half the abundance of. Elements above Z 30. The r-process occurs in high-entropy. Environments (core-collapse supernovae and. Neutron-star mergers are leading candidates for the. Sites) in which extremely high neutron fluxes result in. Extremely rapid, successive neutron captures, driving. Abundance pattern of stable (and very long-lived).
greta.lbl.gov
rp process - GRETA
http://greta.lbl.gov/science/rp-process
Design and Technology IP. Explosive scenarios and the rp-process. Event-by-event Doppler reconstructed spectrum of. Zn, using the interaction points from GRETINA's online signal decomposition. This first spectroscopic data of. Zn was taken with GRETINA at NSCL using the d(. X reaction at 70MeV/u [Lan14]. Upper panel: Total. Ray spectrum with the higher-energy region expanded. The inset shows the resolution of a double structure when restricting the polar detection angle theta to 70. That the rather small...
greta.lbl.gov
History - GRETA
http://greta.lbl.gov/history
Design and Technology IP. The Path to Gamma-Ray Tracking Arrays. Gamma-ray resolving power as a function of time in low-energy nuclear spectroscopy. Each development in the field has led directly to improvements in the sensitivity of measurements and the experimental reach possible. Hosted by Florida State University. Your use of this site is subject to our security and privacy policies. A US Department of Energy National Laboratory Operated by the University of California.
