Abstract
The photoion yield spectra of an endohedral metallofullerene Pr@C82 were measured in the photon energy range of 100-150 eV by using time-of-flight mass spectrometry. Parent ions Pr@C82+, Pr@C822+ and Pr@C823+ were observed in the mass spectra. The photoion yield spectra of Pr@C822+ showed a broad peak at 120-140 eV that was assigned to the 4d-4f giant dipole resonance of the encapsulated Pr atoms. Absolute photoabsorption cross sections of Pr@C82 were evaluated from the photoion yield spectra to be 37±12 Mb at 110 eV (off-resonance) and 52±13 Mb at 130 eV (on-resonance). These cross sections of Pr@C82 were compared with the results of Ce@C82, the only metallofullerene whose photoionization properties have ever been studied near the 4d edge of the encapsulated metal atom. The enhancement of photoabsorption due to the giant resonance was found to be similar in Pr@C82 and Ce@C82, but there are marked differences in the peak shapes, which can be explained as due to interference effects between the fullerene cage and the encapsulated metal atoms.
| Original language | English |
|---|---|
| Pages (from-to) | 1590-1598 |
| Number of pages | 9 |
| Journal | Journal of Quantitative Spectroscopy and Radiative Transfer |
| Volume | 109 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Jun 2008 |
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Keywords
- Mass spectrometry
- Metallofullerenes
- Photoabsorption
- Photoionization
- Synchrotron radiation
ASJC Scopus subject areas
- Spectroscopy
- Atomic and Molecular Physics, and Optics
Cite this
The 4d-4f dipole resonance of the Pr atom in an endohedral metallofullerene, Pr@C82. / Katayanagi, Hideki; Kafle, Bhim P.; Kou, Junkei; Mori, Takanori; Mitsuke, Koichiro; Takabayashi, Yasuhiro; Kuwahara, Eiji; Kubozono, Yoshihiro.
In: Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 109, No. 9, 06.2008, p. 1590-1598.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The 4d-4f dipole resonance of the Pr atom in an endohedral metallofullerene, Pr@C82
AU - Katayanagi, Hideki
AU - Kafle, Bhim P.
AU - Kou, Junkei
AU - Mori, Takanori
AU - Mitsuke, Koichiro
AU - Takabayashi, Yasuhiro
AU - Kuwahara, Eiji
AU - Kubozono, Yoshihiro
PY - 2008/6
Y1 - 2008/6
N2 - The photoion yield spectra of an endohedral metallofullerene Pr@C82 were measured in the photon energy range of 100-150 eV by using time-of-flight mass spectrometry. Parent ions Pr@C82+, Pr@C822+ and Pr@C823+ were observed in the mass spectra. The photoion yield spectra of Pr@C822+ showed a broad peak at 120-140 eV that was assigned to the 4d-4f giant dipole resonance of the encapsulated Pr atoms. Absolute photoabsorption cross sections of Pr@C82 were evaluated from the photoion yield spectra to be 37±12 Mb at 110 eV (off-resonance) and 52±13 Mb at 130 eV (on-resonance). These cross sections of Pr@C82 were compared with the results of Ce@C82, the only metallofullerene whose photoionization properties have ever been studied near the 4d edge of the encapsulated metal atom. The enhancement of photoabsorption due to the giant resonance was found to be similar in Pr@C82 and Ce@C82, but there are marked differences in the peak shapes, which can be explained as due to interference effects between the fullerene cage and the encapsulated metal atoms.
AB - The photoion yield spectra of an endohedral metallofullerene Pr@C82 were measured in the photon energy range of 100-150 eV by using time-of-flight mass spectrometry. Parent ions Pr@C82+, Pr@C822+ and Pr@C823+ were observed in the mass spectra. The photoion yield spectra of Pr@C822+ showed a broad peak at 120-140 eV that was assigned to the 4d-4f giant dipole resonance of the encapsulated Pr atoms. Absolute photoabsorption cross sections of Pr@C82 were evaluated from the photoion yield spectra to be 37±12 Mb at 110 eV (off-resonance) and 52±13 Mb at 130 eV (on-resonance). These cross sections of Pr@C82 were compared with the results of Ce@C82, the only metallofullerene whose photoionization properties have ever been studied near the 4d edge of the encapsulated metal atom. The enhancement of photoabsorption due to the giant resonance was found to be similar in Pr@C82 and Ce@C82, but there are marked differences in the peak shapes, which can be explained as due to interference effects between the fullerene cage and the encapsulated metal atoms.
KW - Mass spectrometry
KW - Metallofullerenes
KW - Photoabsorption
KW - Photoionization
KW - Synchrotron radiation
UR - http://www.scopus.com/inward/record.url?scp=43149122925&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=43149122925&partnerID=8YFLogxK
U2 - 10.1016/j.jqsrt.2007.11.005
DO - 10.1016/j.jqsrt.2007.11.005
M3 - Article
AN - SCOPUS:43149122925
VL - 109
SP - 1590
EP - 1598
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
SN - 0022-4073
IS - 9
ER -