| Автор | María L Calvo |
| Дата выпуска | 2000-07-21 |
| dc.description | The confined propagation of slow neutrons along waveguides of a small cross section (fibres), discussed theoretically some time ago and demonstrated experimentally by other authors later, is analysed further. Motivated by those experiments, a three-dimensional quantum-mechanical treatment of the associated bending losses is presented. An approximate (two-parameter) formula is derived for the transmission coefficient Υ of the curved fibre, which displays its explicit dependence on the curvature radius R<sub>cu</sub>, for 0<R<sub>cu</sub>< + ∞. By adjusting one of the parameters (b), consistently with the theoretical analysis, and by fitting the other, the approximate formula describes all measured data for Υ. The parameter b (which accounts for the experimental data for Υ at large R<sub>cu</sub>) allows the estimation of the number of effectively excited modes in the fibre. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Neutron fibres: a three-dimensional analysis of bending losses |
| Тип | paper |
| DOI | 10.1088/0022-3727/33/14/306 |
| Electronic ISSN | 1361-6463 |
| Print ISSN | 0022-3727 |
| Журнал | Journal of Physics D: Applied Physics |
| Том | 33 |
| Первая страница | 1666 |
| Последняя страница | 1673 |
| Аффилиация | María L Calvo; Departamento de Optica, Facultad de Ciencias Físicas, Universidad Complutense, 28040, Madrid, Spain |
| Выпуск | 14 |
