PSAS 2012
International Conference on Precision Physics
of Simple Atomic Systems 2012
Eltville, Germany -
Information

Title:	Prof.
Family Name:	Heil
First Name:	Werner
Gender:	male
E-Mail:	wheiluni-mainz.de
Affiliation for Badge:	Institute of Physics Mainz
Institute:	Institute of Physics
Address (Street):	Staudingerweg 7
Postal Code, City:	55099 Mainz
Country:	Germany
Phone:	+49-(0)6131-3922885
Fax:
Arrival Date:	June 10
Departure Date:	June 15
Excursion with Conference Dinner:	Not selected
Payment:	Cash at the conference site
Title:	PROBING FUNDAMENTAL SYMMETRIES IN 3HE/129XE CLOCK COMPARISON EXPERIMENTS
Abstract:	W. Heil(a), S. Karpuk(a), Yu.Sobolev(a) , K.Tullney(a), M.Burghoff(b), W. Kilian(b), S.Knappe-Grüneberg(b), W.Müller(b), A.Schnabel(b), F.Seifert(b), L.Trahms(b) F. Allendinger(c),U.Schmidt(c) (a)Institut für Physik, 55099 Mainz, Germany (b)Physikalisch-Technische Bundesanstalt, 10587 Berlin, Germany (c)University of Heidelberg; Germany We discuss the design and performance of a very sensitive low-field magnetometer based on the detection of free spin precession of gaseous, nuclear polarized 3He or 129Xe samples with a SQUID as magnetic flux detector. Characteristic spin precession times of more than 100h were measured in low magnetic fields (about 1µT) and in the regime of motional narrowing. The achieved signal-to-noise ratio of more than 5000:1leads to a sensitivity level (Cramer-Rao Lower Bound) of 100 Zeptotesla after one day. With the detection of the free precession of co-located 3He/129Xe nuclear spins ( clock comparison), the device can be used as ultra-sensitive probe for non-magnetic spin interactions, since the magnetic dipole interaction (Zeeman-term) drops out in the weighted frequency difference, i.e., w_He - g_He/g_Xe*w_Xe . We report on searches for a) Lorentz violating signatures by monitoring the Larmor frequencies of co-located He/129Xe spin samples as the laboratory reference frame rotates with respect to distant stars (sidereal modulation) and b) spin-dependent short-range interactions induced by light, pseudoscalar bosons such as the Axion invented to solve the strong CP problem.

PSAS2012 Registration Main Page