Events at Physics |
Events During the Week of May 8th through May 15th, 2011
Monday, May 9th, 2011
- No events scheduled
Tuesday, May 10th, 2011
- No events scheduled
Wednesday, May 11th, 2011
- No events scheduled
Thursday, May 12th, 2011
- Atomic Physics Seminar
- Radioargon dating with Atom Trap Trace Analysis (detection of 39Ar at the part-per quadrillion level)
- Time: 11:00 am
- Place: 5310 Chamberlin
- Speaker: Will Williams, Argonne National Lab
- Abstract: Atom Trap Trace Analysis (ATTA), a laser-based atom counting method, has been used to analyze atmospheric 39Ar (half-life = 269 yr), a cosmogenic isotope with an isotopic abundance of 0.8 parts-per-quadrillion (8.x10-16). In addition to the superior selectivity demonstrated in this work, both the counting rate and counting efficiency of ATTA have been improved by two orders of magnitude over prior results. Along with the previously demonstrated detection of 81Kr (229,000 yr) and 85Kr (10.8 yr) at the 10-12 level, ATTA can now be used to analyze all three long-lived noble gas radioisotopes covering a wide range of ages and applications.
This project is supported by DOE Nuclear Physics - Host: Mark Saffman
- NPAC (Nuclear/Particle/Astro/Cosmo) Forum
- Title to be announced
- Time: 4:00 pm
- Place: 4274 Chamberlin Hall
- Speaker: Jeff Allen, NYU
- Host: Stefan Westerhoff
Friday, May 13th, 2011
- NPAC (Nuclear/Particle/Astro/Cosmo) Forum
- Title to be announced
- Time: 2:30 pm
- Place: 4274 Chamberlin
- Speaker: Mischa Malkov, UCSB
- Host: Simona Toscano