Please use this identifier to cite or link to this item:
DC FieldValue
dc.titleAn exacting transition probability measurement - A direct test of atomic many-body theories
dc.contributor.authorDutta, T
dc.contributor.authorDe Munshi, D
dc.contributor.authorYum, D
dc.contributor.authorRebhi, R
dc.contributor.authorMukherjee, M
dc.identifier.citationDutta, T, De Munshi, D, Yum, D, Rebhi, R, Mukherjee, M (2016). An exacting transition probability measurement - A direct test of atomic many-body theories. Scientific Reports 6 : 29772. ScholarBank@NUS Repository.
dc.description.abstractA new protocol for measuring the branching fraction of hydrogenic atoms with only statistically limited uncertainty is proposed and demonstrated for the decay of the P 3/2 level of the barium ion, with precision below 0.5%. Heavy hydrogenic atoms like the barium ion are test beds for fundamental physics such as atomic parity violation and they also hold the key to understanding nucleo-synthesis in stars. To draw definitive conclusion about possible physics beyond the standard model by measuring atomic parity violation in the barium ion it is necessary to measure the dipole transition probabilities of low-lying excited states with a precision better than 1%. Furthermore, enhancing our understanding of the barium puzzle in barium stars requires branching fraction data for proper modelling of nucleo-synthesis. Our measurements are the first to provide a direct test of quantum many-body calculations on the barium ion with a precision below one percent and more importantly with no known systematic uncertainties. The unique measurement protocol proposed here can be easily extended to any decay with more than two channels and hence paves the way for measuring the branching fractions of other hydrogenic atoms with no significant systematic uncertainties.
dc.publisherNature Publishing Group
dc.rightsAttribution 4.0 International
dc.sourceUnpaywall 20201031
dc.contributor.departmentDEPT OF PHYSICS
dc.contributor.departmentCENTRE FOR QUANTUM TECHNOLOGIES
dc.description.sourcetitleScientific Reports
Appears in Collections:Elements
Staff Publications

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1038_srep29772.pdf989.12 kBAdobe PDF




checked on Aug 7, 2022

Page view(s)

checked on Aug 4, 2022

Google ScholarTM



This item is licensed under a Creative Commons License Creative Commons