TY - JOUR
T1 - Photoionization/fragmentation of endohedral fullerenes
AU - Suzuki, S.
AU - Kojima, Y.
AU - Shiromaru, H.
AU - Achiba, Y.
AU - Wakabayashi, T.
AU - Tellgmann, R.
AU - Campbell, E. E.B.
AU - Hertel, I. V.
PY - 1997
Y1 - 1997
N2 - Photoionization/fragmentation of endohedral fullerenes was investigated by use of laser-desorption time-of-flight (LD-TOF) mass spectroscopy. The velocity distribution of the parent ion (LaC82+) was found to be bimodal, as has previously been shown for laser desorbed C+60. The fragment ions have velocity distributions corresponding predominantly to the fast parent ion distribution. The LD-TOF mass spectra taken with a relatively low laser fluence were independent of the delay time of the extraction pulse, showing only a monotonically decreasing pattern of LaC2n+ (as n decreased). However, with higher laser fluence, it was shown that the mass distributions drastically changed from the monotonically decreasing pattern to that of C2n+ and LaC+2n with magic numbers. Based on these findings, a plausible photoionization/fragmentation mechanism is presented and discussed.
AB - Photoionization/fragmentation of endohedral fullerenes was investigated by use of laser-desorption time-of-flight (LD-TOF) mass spectroscopy. The velocity distribution of the parent ion (LaC82+) was found to be bimodal, as has previously been shown for laser desorbed C+60. The fragment ions have velocity distributions corresponding predominantly to the fast parent ion distribution. The LD-TOF mass spectra taken with a relatively low laser fluence were independent of the delay time of the extraction pulse, showing only a monotonically decreasing pattern of LaC2n+ (as n decreased). However, with higher laser fluence, it was shown that the mass distributions drastically changed from the monotonically decreasing pattern to that of C2n+ and LaC+2n with magic numbers. Based on these findings, a plausible photoionization/fragmentation mechanism is presented and discussed.
UR - http://www.scopus.com/inward/record.url?scp=0141910082&partnerID=8YFLogxK
U2 - 10.1007/s004600050239
DO - 10.1007/s004600050239
M3 - Article
AN - SCOPUS:0141910082
SN - 0178-7683
VL - 40
SP - 410
EP - 413
JO - Zeitschrift für Physik D Atoms, Molecules and Clusters
JF - Zeitschrift für Physik D Atoms, Molecules and Clusters
IS - 1
ER -