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Your search keyword '"Düsing, C"' showing total 2 results
Start Over Author "Düsing, C" Topic neutrons
2 results on '"Düsing, C"'

1. Search for an electric charge of the neutron.

Author

Siemensen, C., Düsing, C., Geltenbort, P., Giebel, C., Reich, T., and Plonka, C.

Subjects
*NEUTRONS, *QUANTIZATION (Physics), *ELECTRIC charge
Abstract

The electrical neutrality of the neutron is linked to the electric charge quantization. It is not understood yet if the electric charge is quantized or not. Since the discovery of the neutron, many attempts have been made to measure its electric charge qn directly and indirectly. We present a method to search for a possible qn by means of an optical setup using ultracold neutrons. In a first run, a statistical sensitivity of δqn=2.4×10-20 e/√day is achieved. Possible improvements to increase this sensitivity down to δqn≈1×10-21 e/√day are found and discussed. [ABSTRACT FROM AUTHOR]

Published
2018
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2. An improved measurement of the electric dipole moment of the neutron

Author

Altarev, I., Ban, G., Bison, G., Bodek, K., Burghoff, M., Chowdhuri, Z., Daum, M., Düsing, C., Fertl, M., Fierlinger, P., Franke, B., Grab, C., Gutsmiedl, E., Hampel, G., Heil, W., Henneck, R., Horras, M., Khomutov, N., Kirch, K., and Kistryn, S.

Subjects
*DIPOLE moments, *NEUTRONS, *RAMSEY theory, *SPECTROMETERS, *MAGNETIC fields
Abstract

Abstract: We describe the status of the new measurement of the neutron electric dipole moment (nEDM) to be performed at the strong source of ultra-cold neutrons at the Paul Scherrer Institut. The experimental technique is based on Ramsey''s method of separated oscillatory fields, applied to UCN stored in vacuum in a chamber at room temperature. Our approach is performed in three phases: in phase one, new components have been developed and tested at the Institut Laue-Langevin. Phase two is being performed at PSI, where the apparatus was moved in 2009. Here, together with the optimization of the magnetic environment, the prospective UCN density of ∼ 100 cm-3 should enable an improvement of the currently best limit by a factor of five within two years of data taking. In the third phase, a new spectrometer will then gain another order of magnitude in sensitivity. The improvements will be mainly due to (1) much higher UCN intensity, (2) improved magnetometry and magnetic field control, and (3) a double chamber configuration with opposite electric field directions. [Copyright &y& Elsevier]

Published
2010
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