Observation of mixed fermionic-bosonic helium clusters by transmission grating diffraction |
| |
Authors: | Kalinin Anton Kornilov Oleg Schöllkopf Wieland Toennies J Peter |
| |
Institution: | Max-Planck-Institut für Dynamik und Selbstorganisation, Bunsenstrasse 10, D-37073 G?ttingen, Germany. |
| |
Abstract: | Small weakly bound boson-fermion 4He(m) 3He(n) clusters formed in a free jet expansion are identified using nondestructive transmission grating diffraction. The observations confirm the existence of more than 11 very tenuous complexes including the three-body halo molecule 4He2 3He and the pseudo-Borromean complex 4He2 3He2. Effective cluster formation temperatures, extracted from a sudden freeze model for cluster growth using theoretical binding energies, increase smoothly with cluster size, thereby confirming the calculations with the possible exception of 4He2 3He2. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|