First Ever Storage of Ultracold Neutrons in a Magnetic Trap Made of Permanent Magnets.
Further improvement in the accuracy of any neutron lifetime experiment by means of ultracold neutrons (UCN) in material bottles is limited due to unavoidable systematic effects when the UCN are reflected from the walls. However, such effects can be excluded in principle if magnetic trapping of UCN is used. The storage of UCN in a small magnetic trap made of permanent magnets was demonstrated for the first time ever. The measured storage time in this feasibility study was (882 ± 16) s. At this level of accuracy no depolarization was observed.
Petersburg Nuclear Physics Institute, Gatchina, Russia.
V F
VF
Ezhov
Petersburg Nuclear Physics Institute, Gatchina, Russia.
A Z
AZ
Andreev
Petersburg Nuclear Physics Institute, Gatchina, Russia.
A A
AA
Glushkov
Petersburg Nuclear Physics Institute, Gatchina, Russia.
A G
AG
Glushkov
Petersburg Nuclear Physics Institute, Gatchina, Russia.
M N
MN
Groshev
Petersburg Nuclear Physics Institute, Gatchina, Russia.
V A
VA
Knyazkov
Petersburg Nuclear Physics Institute, Gatchina, Russia.
G B
GB
Krygin
Petersburg Nuclear Physics Institute, Gatchina, Russia.
V L
VL
Ryabov
Petersburg Nuclear Physics Institute, Gatchina, Russia.
A P
AP
Serebrov
Research Center "Domen", S-Petersburg, Russia.
B A
BA
Bazarov
Institut Laue-Langevin, Grenoble, France.
P
P
Geltenbort
Technical University, Munich, Germany.
F J
FJ
Hartman
Technical University, Munich, Germany.
S
S
Paul
Technical University, Munich, Germany.
R
R
Picker
Technical University, Munich, Germany.
O
O
Zimmer
Research Institute of Electrophysical Apparatus, S-Petersburg, Russia.
N A
NA
Kovrizhnykh
magnetic traps; permanent magnets; ultracold neutrons