TY - JOUR
T1 - ν4 Band of CH4 in helium nanodroplets
T2 - A probe of the dynamical response of a superfluid
AU - Ravi, Aakash
AU - Kuma, Susumu
AU - Yearwood, Christopher
AU - Kahlon, Birinder
AU - Mustafa, Majd
AU - Al-Basheer, Watheq
AU - Enomoto, Katsunari
AU - Momose, Takamasa
PY - 2011/8/26
Y1 - 2011/8/26
N2 - The triply degenerate ν4 bending mode of methane in superfluid helium nanodroplets was observed at 7.7 μm by high-resolution infrared depletion spectroscopy. Five rotational transitions were detected, with a minimum linewidth of only 65 MHz. The observed lines showed slightly asymmetric line shapes, especially in the case of the P(2) and R(1) rotational lines. Analysis of the line shape indicates that the superfluid environment has a finite response time of a few nanoseconds to equilibrate upon rotational excitation of CH4.
AB - The triply degenerate ν4 bending mode of methane in superfluid helium nanodroplets was observed at 7.7 μm by high-resolution infrared depletion spectroscopy. Five rotational transitions were detected, with a minimum linewidth of only 65 MHz. The observed lines showed slightly asymmetric line shapes, especially in the case of the P(2) and R(1) rotational lines. Analysis of the line shape indicates that the superfluid environment has a finite response time of a few nanoseconds to equilibrate upon rotational excitation of CH4.
UR - http://www.scopus.com/inward/record.url?scp=80052293749&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.84.020502
DO - 10.1103/PhysRevA.84.020502
M3 - 学術論文
AN - SCOPUS:80052293749
SN - 1050-2947
VL - 84
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
M1 - 020502
ER -