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New polarized beams & laser spectroscopy support

Polarized beams are an ideal probe for magnetic properties in surfaces (β-NMR). Apart from the classical spin polarized Li beams, new intense probe beams that exhibit short half life and low spin are being developed. So far 11Be and 19F have been investigated for their usefulness. Cu and Zn beams are under development.

A major facility upgrade is being started in winter 2017 to provide room for additional laser sources and diagnostics for the development of new beams.

Project leader is Dr. Phil Levy (TRIUMF Research Scientist) assisted by Dr. Ruohong Li (TRIUMF laser physicist).



new Projects



32 Sodium

Osaka group - laser spectroscopy 

T1/2=12.9(7) ms


standard beam for β-NMR / β-NQR experiments

11 Beryllium

needs more sensitive asymmetry detection

drawback: T1/2=11s



Na charge exchange cell

   efficient quasi-resonant charge exchange on Na is used for Li and light elements.

The current vapor-jet charge exchange cell has been optimized for long, continuous operation at ISAC.

Rb charge exchange cell

   for efficient quasi-resonant charge exchange of Fr+, Rb is superior to Na, which is used for Li and light element charge exchange.

A new vapor-jet charge exchange cell was designed, fabricated & operated (S1010 collinear laser spectroscopy of Fr isotopes, Sept. 2011). Now in routine operation.

31 Magnesium

31Mg spin-polarization test T1/2=230(20)ms (fall 2013 - no liquid He for β-NMR to measure pol. - next run 2014)

New polarized beams