title: Probing the structure and dynamics of molecular clusters using rotational wave packets.
abstract: 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.
authors.affiliation: University of Leicester, Department of Physics & Astronomy, Leicester LE1 7RH, United Kingdom.
authors.forename: Gediminas
authors.initials: G
authors.lastname: Galinis
authors.affiliation: Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom.
authors.forename: Cephise
authors.initials: C
authors.lastname: Cacho
authors.affiliation: Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom.
authors.forename: Richard T
authors.initials: RT
authors.lastname: Chapman
authors.affiliation: University of Leicester, Department of Chemistry, Leicester LE1 7RH, United Kingdom.
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Ellis
authors.affiliation: Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France.
authors.forename: Marius
authors.initials: M
authors.lastname: Lewerenz
authors.affiliation: University of Leicester, Department of Physics & Astronomy, Leicester LE1 7RH, United Kingdom.
authors.forename: Luis G
authors.initials: LG
authors.lastname: Mendoza Luna
authors.affiliation: University of Southampton, Chemistry, Southampton SO17 1BJ, United Kingdom.
authors.forename: Russell S
authors.initials: RS
authors.lastname: Minns
authors.affiliation: Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France.
authors.forename: Mirjana
authors.initials: M
authors.lastname: Mladenović
authors.affiliation: Max Born Institute, Max Born Strasse 2A, 12489 Berlin, Germany.
authors.forename: Arnaud
authors.initials: A
authors.lastname: Rouzée
authors.affiliation: Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom.
authors.forename: Emma
authors.initials: E
authors.lastname: Springate
authors.affiliation: Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire OX11 0QX, United Kingdom.
authors.forename: I C Edmond
authors.initials: IC
authors.lastname: Turcu
authors.affiliation: University of Leicester, Department of Physics & Astronomy, Leicester LE1 7RH, United Kingdom.
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Watkins
authors.affiliation: University of Leicester, Department of Physics & Astronomy, Leicester LE1 7RH, United Kingdom.
authors.forename: Klaus
authors.initials: K
authors.lastname: von Haeften