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Gravitational depolarization of ultracold neutrons: comparison with data

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posted on 2023-06-08, 22:45 authored by S Afach, N J Ayres, C A Baker, G Ban, G Bison, K Bodek, M Fertl, B Franke, P Geltenbort, K Green, Clark GriffithClark Griffith, M van der Grinten, Z D Grujic, Philip Harris, W Heil, V Hélaine, P Iaydjiev, S N Ivanov, M Kasprzak, Y Kermaidic, K Kirch, H-C Koch, S Komposch, A Kozela, J Krempel, B Lauss, T Lefort, Y Lemière, M Musgrave, O Naviliat-Cuncic, J M Pendlebury, F M Piegsa, G Pignol, C Plonka-Spehr, P N Prashanth, G Quéméner, M Rawlik, D Rebreyend, D Ries, S Roccia, D Rozpedzik, P Schmidt-Wellenburg, N Severijns, D Shiers, J Thorne, A Weis, E Wursten, J Zejma, J Zenner, G Zsigmond
We compare the expected effects of so-called gravitationally enhanced depolarization of ultracold neutrons to measurements carried out in a spin-precession chamber exposed to a variety of vertical magnetic-field gradients. In particular, we have investigated the dependence upon these field gradients of spin-depolarization rates and also of shifts in the measured neutron Larmor precession frequency. We find excellent qualitative agreement, with gravitationally enhanced depolarization accounting for several previously unexplained features in the data.

Funding

Magnetic Field Uniformity and Ultracold Neutron Storage Optimization for CryoEDM; G1288; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/L006472/1

Consolidated Grant; G0927; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/K001329/1

Neutron EDM; G1558; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/M003426/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

1550-7998

Publisher

American Physical Society

Issue

5

Volume

92

Page range

052008

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-10-13

First Open Access (FOA) Date

2015-10-13

First Compliant Deposit (FCD) Date

2015-10-13

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