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@ARTICLE{Chung:611022,
author = {Chung, Simon and Vonk, Vedran and Pennicard, David and
Graafsma, Heinz and Stierle, Andreas},
title = {{T}ransient heating of {P}d nanoparticles studied by x-ray
diffraction with timeof arrival photon detection},
journal = {Structural dynamics},
volume = {11},
number = {4},
issn = {2329-7778},
address = {Melville, NY},
publisher = {AIP Publishing LLC},
reportid = {PUBDB-2024-04784},
pages = {044301},
year = {2024},
abstract = {Pulsed laser heating of an ensemble of Pd nanoparticles,
supported by an MgO substrate, is studied by
x-raydiffraction. By time-resolved Bragg peak shift
measurements due to thermal lattice expansion, the
transienttemperature of the Pd nanoparticles is determined,
which quickly rises by at least 100 K upon laser
excitationand then decays within 90 ns. The diffraction
experiments were carried out using a Cu x-ray tube,
givingcontinuous radiation and the hybrid pixel detector
Timepix3 operating with single photon counting in a
time-of-arrival mode. This type of detection scheme does not
require time-consuming scanning of the pump-probedelay. The
experimental time resolution is estimated at 15 ± 5 ns,
which is very close to the detector’s limitand matches
with the 7 ns laser pulse duration. Compared to bulk metal
single crystals, it is discussed thatthe maximum temperature
reached by the Pd nanoparticles is higher and their cooling
rate is lower. Theseeffects are explained by the oxide
support having a lower heat conductivity.},
cin = {FS-NL / FS-DS},
ddc = {500},
cid = {I:(DE-H253)FS-NL-20120731 / I:(DE-H253)FS-DS-20120731},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632)},
pid = {G:(DE-HGF)POF4-632},
experiment = {EXP:(DE-H253)Nanolab-03-20150101 /
EXP:(DE-H253)Nanolab-04-20150101 /
EXP:(DE-H253)Nanolab-01-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {38974812},
UT = {WOS:001262132200001},
doi = {10.1063/5.0189052},
url = {https://bib-pubdb1.desy.de/record/611022},
}