| Autor: |
M. Nakao, T. Hiromasa, H. Souda, M. Tanabe, T. Ishikawa, H. Tongu, A. Noda, K. Jimbo, T. Shirai, M. Grieser, H. Okamoto, A. V. Smirnov |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Physical Review Special Topics. Accelerators and Beams, Vol 15, Iss 11, p 110102 (2012) |
| Druh dokumentu: |
article |
| ISSN: |
1098-4402 |
| DOI: |
10.1103/PhysRevSTAB.15.110102 |
| Popis: |
We report the first observation of indirect resonantly enhanced transverse laser cooling of a bunched, stored ion beam of 40 keV ^{24}Mg^{+}. The longitudinal velocity distribution and the horizontal beam size of the laser-cooled ^{24}Mg^{+} ion beam with 280 nm laser light were simultaneously observed by the use of standard fluorescence-based techniques. Keeping the operation point at (2.068, 1.105), the synchrotron tune (ν_{s}) was changed from 0.0376 to 0.1299. A strong decrease in the cooled horizontal beam size and a corresponding increase in the equilibrium cooled momentum spread were observed at the expected synchrobetatron resonance coupling condition of ν_{s}=0.068, which is the first observation of a resonantly induced coupling for enhanced indirect transverse laser cooling of an ion beam, and is an important step towards creating a crystalline ground state of the beam. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
