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VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:LNS Lunchtime Seminar 
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20261011T182341Z
UID:tag:localist.com\,2008:EventInstance_45526377226332
DTSTART:20240213T170000Z
DTEND:20240213T180000Z
DESCRIPTION:Silviu Udresu\n\nPrecision spectroscopy studies of radioactive 
 molecules for fundamental physics\n\nAbstract:\n\nMolecules are unique qua
 ntum systems for fundamental physics studies. Possessing a large sensitivi
 ty to nuclear effects and violations of the fundamental symmetries of natu
 re\, they can enable precision tests of the Standard Model and the possibi
 lity to probe energy scales beyond tens of TeV. Molecules containing octup
 ole-deformed nuclei\, such as radium monofluoride (RaF)\, are expected to 
 be particularly sensitive to symmetry violating nuclear properties. In thi
 s talk\, I will present the results obtained from a series of laser spectr
 oscopy experiments performed on short-lived RaF molecules at the ISOLDE fa
 cility at CERN. The vibrational structure of (223-226\,228)RaF and the rot
 ational and hyperfine structure of 226RaF and 225RaF were measured with hi
 gh precision. This allowed us to establish a laser cooling scheme for thes
 e molecules and to investigate the effects of electroweak nuclear properti
 es on the molecular energy levels. These results are the first of their ki
 nd performed on radioactive\, short-lived molecules\, opening the way for 
 future precision studies and new physics searches in these systems. I will
  then discuss the current status of a novel experiment aiming to measure h
 adronic parity violation using molecular ions inside a Penning trap. Our m
 ethod should allow measurements over the entire nuclear chart\, providing 
 enhancements in the sensitivity to the sought for signals of more than 12 
 orders of magnitude compared to atoms. Finally\, I will present the develo
 pments of a highly sensitive experimental setup for precision laser spectr
 oscopy studies of very short-lived isotopes (lifetime < 1 ms)\, produced i
 n small amounts (< 1/minute) in hot environments\, without the need for co
 oling techniques. Such nuclear systems are of paramount importance to guid
 e our understanding of nuclear matter and connect our description of nucle
 i with the underlying theory of the strong force.
LOCATION:\, 414
SUMMARY:LNS Lunchtime Seminar 
URL;VALUE=URI:https://calendar.mit.edu/event/lns_lunchtime_seminar_8815
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