Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268

Fri., September 06, 2013, at 10:30 am - 11:30 pm

Triple-Alpha Process in Hot Astrophysical Scenarios and Properties of Particles (PoP)

Nidhi R. Patel, Computational Nucl. Phys. Group, LLNL, Livermore, CA
ORNL, Physics Division, Bldg. 6008 Large Conference Room

First, I will talk about my PhD thesis work done at Argonne in nuclear astrophysics highlighting the triple-alpha process that occurs in red giant stars and supernovae. The goal of my thesis was to resolve the discrepancies from previous studies of beta-decay branching ratios from 12B and 12N to 12C excited states and to search for theoretically predicted 2+ state. Along with the results, I will present the Monte Carlo simulation I conducted to understand the detector response and the brief R-Matrix analysis I performed to look for the 2+ state. Second, I will talk about my current project, Properties of Particles (PoP) python package to store nuclear structure data such as atomic mass, nuclear level energy and widths, half-life, spin, etc. There are many nuclear databases that provide this information in various forms, such as evaluated, experimental, etc. The goal is to update from legacy formats and create one database that provides all types of data. My job is to produce an infrastructure that allows the user to use PoP to create a database that is written in various modern computer formats such as XML. In addition, PoP will also include various utilities that will provided translating legacy databases to newer formats. Moreover, infrastructure for other databases such as atomic, elementary particles, quasi-particles, etc. can be added in the future to accommodate the broad physics community.

Steven D. Pain, 865-574-4697