Identification of a new escape channel for UCN from traps
| Autor: | D. G. Kartashov, A. G. Kharitonov, P Yaidjiev, Peter Geltenbort, V. N. Shvetsov, E.V. Lychagin, K. Schreckenbach, R. R. Tal’daev, J. M. Pendlebury, Valery Nesvizhevsky, A. P. Serebrov, A. V. Strelkov, A. Yu. Muzychka |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Nuclear and High Energy Physics Astrophysics::High Energy Astrophysical Phenomena Neutron density Trap (computing) Ultracold neutrons Neutron Physics::Atomic Physics Atomic physics Nuclear Experiment Absorption (electromagnetic radiation) Instrumentation Communication channel |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 440:695-703 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/s0168-9002(99)01064-5 |
| Popis: | Ultra-cold neutrons (UCN) can be stored in a trap if their energy is lower than the trap wall potential. It is well known that the neutron density in a trap decreases due to neutron beta-decay, upscattering and absorption on surfaces but we have identified a complementary escape channel. This arises from a small increase in the energy of UCN during their interaction with a surface. Higher-energy neutrons can then escape into the bulk material or penetrate through the trap wall if it is thin enough. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect