619 citations · 1.2k across the 35 of their papers we have counts for
10 papers · 1 filter
Measurement of the neutron incoherent scattering length of Hg using stored ultracold neutrons
C. Abel, K. Bodek, E. Chanel +35
We present the first direct measurement of the neutron incoherent scattering length of Hg. The measurement was performed with the Ramsey apparatus of the neutron electric…
Search for an interaction mediated by axion-like particles with ultracold neutrons at the PSI
N. J. Ayres, G. Bison, K. Bodek +44
We report on a search for a new, short-range, spin-dependent interaction using a modified version of the experimental apparatus used to measure the permanent neutron electric dipol…
Johnson-Nyquist Noise Effects in Neutron Electric-Dipole-Moment Experiments
N. J. Ayres, G. Ban, G. Bison +37
Magnetic Johnson-Nyquist noise (JNN) originating from metal electrodes, used to create a static electric field in neutron electric-dipole-moment (nEDM) experiments, may limit the s…
Experimental study of ultracold neutron production in pressurized superfluid helium
P. Schmidt-Wellenburg, J. Bossy, E. Farhi +5
We have investigated experimentally the pressure dependence of the production of ultracold neutrons (UCN) in superfluid helium in the range from saturated vapor pressure to 20bar.…
A measurement of the neutron to 199Hg magnetic moment ratio
S. Afach, C. A. Baker, G. Ban +51
The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury at…
Neutron production and thermal moderation at the PSI UCN source
H. Becker, G. Bison, B. Blau +12
We report on gold foil activation measurements performed along a vertical channel along the tank of the ultracold neutron source at the Paul Scherrer Institute. The activities obta…
Transitions between levels of a quantum bouncer induced by a noise-like perturbation
C. Codau, V. V. Nesvizhevsky, M. Fertl +2
The probability of transition between levels of a quantum bouncer, induced by a noise-like perturbation, is calculated. The results are applied to two sources of noise (vibrations…
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…
New constraints on Lorentz invariance violation from the neutron electric dipole moment
I. Altarev, C. A. Baker, G. Ban +40
We propose an original test of Lorentz invariance in the interaction between a particle spin and an electromagnetic field and report on a first measurement using ultracold neutrons…
Accumulation and extraction of ultracold neutrons from a superfluid helium converter coated with fluorinated grease
O. Zimmer, P. Schmidt-Wellenburg, M. Assmann +5
We report experiments on the production of ultracold neutrons (UCN) in a converter of superfluid helium coated with fluorinated grease. We employed our technique of window-free ext…