188 citations · 572 across the 11 of their papers we have counts for
11 papers
Precise Measurement of Magnetic Field Gradients from Free Spin Precession Signals of He and Xe Magnetometers
F. Allmendinger, P. Blümler, M. Doll +12
We report on precise measurements of magnetic field gradients extracted from transverse relaxation rates of precessing spin samples. The experimental approach is based on the free…
Limit on Lorentz-Invariance- and CPT-Violating Neutron Spin Interactions Using a He-Xe Comagnetometer
Fabian Allmendinger, Ulrich Schmidt, Werner Heil +2
We performed a search for a Lorentz-invariance- and CPT-violating coupling of the He and Xe nuclear spins to posited background fields. Our experimental approach is to…
New limit on Lorentz and CPT violating neutron spin interactions using a free precession 3He-129Xe co-magnetometer
F. Allmendinger, W. Heil, S. Karpuk +6
We report on the search for a CPT and Lorentz invariance violating coupling of the 3He and 129Xe nuclear spins (each largely determined by a valence neutron) to background tensor f…
Probing Physics beyond the Standard Model with He/Xe clock comparison experiments
U. Schmidt, F. Allmendinger, W. Heil +5
The comparison of the free precession of co-located 3He-129Xe spins (clock comparison) enables us to search for very tiny nonmagnetic spin interactions. With our setup we could est…
Using a rotating magnetic guiding field for the 3He-129Xe-Comagnetometer
F. Allmendinger, U. Schmidt, W. Heil +5
Our search for non-magnetic spin-dependent interactions is based on the measurement of free precession of nuclear spin polarized 3He and 129Xe atoms in a homogeneous magnetic guidi…
Constraints on Spin-Dependent Short-Range Interaction between Nucleons
Kathlynne Tullney, Fabian Allmendinger, Martin Burghoff +10
We report on the search for a new spin-dependent P- and T-violating interaction between nucleons mediated by light, pseudoscalar bosons such as the axion which was invented to solv…
An Improved Search for the Neutron Electric Dipole Moment
M. Burghoff, A. Schnabel, G. Ban +34
A permanent electric dipole moment of fundamental spin-1/2 particles violates both parity (P) and time re- versal (T) symmetry, and hence, also charge-parity (CP) symmetry since th…
Limit on Lorentz and CPT violation of the bound Neutron Using a Free Precession 3He/129Xe co-magnetometer
C. Gemmel, W. Heil, S. Karpuk +11
We report on the search for Lorentz violating sidereal variations of the frequency difference of co-located spin-species while the Earth and hence the laboratory reference frame ro…
Testing isotropy of the universe using the Ramsey resonance technique on ultracold neutron spins
I. Altarev, G. Ban, G. Bison +38
Physics at the Planck scale could be revealed by looking for tiny violations of fundamental symmetries in low energy experiments. In 2008, a sensitive test of the isotropy of the U…
Test of Lorentz Symmetry by using a 3He/129Xe Co-Magnetometer
K. Tullney, C. Gemmel, W. Heil +11
To test Lorentz symmetry we used a 3He/129Xe co-magnetometer. We will give a short summary of our experimental setup and the results of our latest measurements. We obtained prelimi…
Ultra-sensitive magnetometry based on free precession of nuclear spins
C. Gemmel, W. Heil, K. Lenz +11
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 w…