Probing the structure and dynamics of molecular clusters using rotational wave packets.

Autor:	Galinis G; University of Leicester, Department of Physics & Astronomy, Leicester LE1 7RH, United Kingdom., Cacho C; Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom., Chapman RT; Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom., Ellis AM; University of Leicester, Department of Chemistry, Leicester LE1 7RH, United Kingdom., Lewerenz M; Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France., Mendoza Luna LG; University of Leicester, Department of Physics & Astronomy, Leicester LE1 7RH, United Kingdom., Minns RS; University of Southampton, Chemistry, Southampton SO17 1BJ, United Kingdom., Mladenović M; Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France., Rouzée A; Max Born Institute, Max Born Strasse 2A, 12489 Berlin, Germany., Springate E; Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom., Turcu IC; Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom., Watkins MJ; University of Leicester, Department of Physics & Astronomy, Leicester LE1 7RH, United Kingdom., von Haeften K; University of Leicester, Department of Physics & Astronomy, Leicester LE1 7RH, United Kingdom.
Jazyk:	angličtina
Zdroj:	Physical review letters [Phys Rev Lett] 2014 Jul 25; Vol. 113 (4), pp. 043004. Date of Electronic Publication: 2014 Jul 24.
DOI:	10.1103/PhysRevLett.113.043004
Abstrakt:	Rotational wave packets of the weakly bound C(2)H(2)-He complex have been created using impulsive alignment. The coherent rotational dynamics were monitored for 600 ps enabling extraction of a frequency spectrum showing multiple rotational energy levels up to J = 4. spectrum has been combined with ab initio calculations to show that the complex has a highly delocalized structure and is bound only by ca. 7 cm(-1). The experiments demonstrate how highly featured rotational spectra can be obtained from an extremely cold environment where only the lowest rotational energy states are initially populated.
Databáze:	MEDLINE
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