Tagging fullerene ions with helium in a cryogenic quadrupole trap
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F19%3A10394771" target="_blank" >RIV/00216208:11310/19:10394771 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=CrI50qdw4U" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=CrI50qdw4U</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijms.2018.12.018" target="_blank" >10.1016/j.ijms.2018.12.018</a>
Alternative languages
Result language
angličtina
Original language name
Tagging fullerene ions with helium in a cryogenic quadrupole trap
Original language description
Helium tagging of charged C-60(q+) ions (q = 1-3) has been used for measuring electronic and infrared gas phase spectra, allowing astronomers to improve the identification of fullerenes in space. Here, we present a detailed study of the attachment of He to cold mass selected fullerene ions. Experiments were performed in the temperature variable radio frequency (rf) ion trap ISORI at high He densities and a few K. For all three charge states, the ternary rate coefficients for forming He-C-60(q+) are below 10(-31) cm(6)S(-1) and all three show temperature dependences, proportional to exp(-T/T-0) with T-0.< 1.5 K. While most of our knowledge on the interaction of C-60(+) with He atoms comes from ab initio calculations, from gas phase ion mobility experiments, and from fullerene ions ejected from He-droplets, the sequential addition of He to C-60(q+) in ter- or maybe bimolecular collisions provides complementary information. Our experimental results are tentatively explained with difficulties to form and stabilize the short-lived He-fullerene complexes while relaxation of hot fullerenes in collisions with cold He seems to be rather efficient. Severe restrictions are due to the fact that thermalized C-60(q+) ions behave like fast rotating rigid spheres. Despite the low efficiency in attaching the first He, measurements reveal a fast subsequent growth as soon as a few He atoms stick to the fullerene. In the case of triply charged ions, almost all primaries can be quickly converted into the particular structure H-32-C-60(3+). IR excitation of this thermalized complex with one 1329 cm(-1) photon provides interesting insight into the decay kinetics.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10401 - Organic chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Mass Spectrometry
ISSN
1387-3806
e-ISSN
—
Volume of the periodical
438
Issue of the periodical within the volume
April
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
78-86
UT code for WoS article
000457635000010
EID of the result in the Scopus database
2-s2.0-85059566456