| Přispěvatelé: |
Mariazzi S., Caravita R., Aghion S., Amsler C., Antonello M., Belov A., Bonomi G., Brusa R.S., Caccia M., Camper A., Castelli F., Cerchiari G., Comparat D., Consolati G., Demetrio A., Di Noto L., Doser M., Evans C., Fani M., Ferragut R., Fesel J., Fontana A., Gerber S., Giammarchi M., Gligorova A., Guatieri F., Hackstock P., Haider S., Hinterberger A., Holmestad H., Kellerbauer A., Khalidova O., Krasnicky D., Lagomarsino V., Lansonneur P., Lebrun P., Malbrunot C., Matveev V., Mueller S.R., Nebbia G., Nedelec P., Oberthaler M., Pagano D., Penasa L., Petracek V., Prelz F., Prevedelli M., Rienaecker B., Robert J., Roehne O.M., Rotondi A., Sandaker H., Santoro R., Smestad L., Sorrentino F., Testera G., Tietje I.C., Widmann E., Yzombard P., Zimmer C., Zurlo N. |
| Popis: |
The 33P state of positronium is an intermediate level suitable for producing long-lived positronium states. On one hand, it can be used in a two-step laser excitation scheme from the ground state to Rydberg levels. On the other hand, excitation of positronium to 33P level is a simple pathway for producing metastable 23S positronium atoms by spontaneous radiactive decay. In this work, experiments showing the production of such long-lived levels, using the 33P state as intermediate state, are presented. The characteristics of the two long-lived levels, in view of experiments of deflectometry/interferometry with positronium, are discussed.The 33P state of positronium is an intermediate level suitable for producing long-lived positronium states. On one hand, it can be used in a two-step laser excitation scheme from the ground state to Rydberg levels. On the other hand, excitation of positronium to 33P level is a simple pathway for producing metastable 23S positronium atoms by spontaneous radiactive decay. In this work, experiments showing the production of such long-lived levels, using the 33P state as intermediate state, are presented. The characteristics of the two long-lived levels, in view of experiments of deflectometry/interferometry with positronium, are discussed. |
