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The article explores optical properties of nanostructures containing spherical gold nanoparticles of various radii. We explore the particle radius as a criterion to select a permittivity model aimed at describing optical absorption spectra…

In radiobiological experiments, the cells can either float in suspension or adhere to the walls of the sample holder. When irradiation is performed in the presence of dose modifying agents such as gold nanoparticles (AuNPs), the different…

Medical Physics · Physics 2025-12-04 Hans Rabus , Oswald Msosa Mkanda

The femtosecond evolution of the electronic temperature of laser-excited gold nanoparticles is measured, by means of ultrafast time-resolved photoemission spectroscopy induced by extreme-ultraviolet radiation pulses. The temperature of the…

The spectral investigation of the triply ionized gold (Au IV) has been carried out in the wavelength region of 500--2106 {\AA}. The gold spectra were photographed at the National Institute of Standards and Technology (NIST, USA) on a 10.7-m…

Atomic Physics · Physics 2023-07-12 Aashna Zainab , K. Haris , Sébastien Gamrath , Pascal Quinet , A. Tauheed

Several models for the simulation of photon elastic scattering are quantitatively evaluated with respect to a large collection of experimental data retrieved from the literature. They include models based on the form factor approximation,…

Computational Physics · Physics 2012-09-27 Matej Batic , Gabriela Hoff , Maria Grazia Pia , Paolo Saracco

Gold nanoparticles (GNPs) may serve as "devices" to emit electromagnetic radiation in the terahertz (THz) range, whereby the energy is delivered by radio frequency or microwave photons which won't by themselves induce transitions between…

Mesoscale and Nanoscale Physics · Physics 2018-08-10 A. V. Postnikov , K. A. Moldosanov

Deep inelastic electron-photon scattering is studied in the Q**2 range from 1.2 to 30 GeV**2 using the LEP1 data taken with the ALEPH, L3 and OPAL detectors at centre-of-mass energies close to the mass of the Z boson. Distributions of the…

High Energy Physics - Experiment · Physics 2012-08-27 ALEPH Collaboration , L3 Collaboration , OPAL Collaboration , LEP Two Photon Working Group

Gold nanoparticles (AuNPs) are increasingly used for their thermoplasmonic properties, i.e. their ability to convert light into heat upon plasmon resonance. However, measuring temperature gradients generated at the microscale by assemblies…

Soft Condensed Matter · Physics 2022-09-02 Lucas Sixdenier , Guillaume Baffou , Christophe Tribet , Emmanuelle Marie

Nanoisland gold films, deposited by vacuum evaporation of gold onto Si(100) substrates, were irradiated with 1.5 MeV Au$^{2+}$ ions up to a fluence of $5\times 10^{14}$ ions cm$^{-2}$ and at incidence angles up to $60^{\circ}$ with respect…

Materials Science · Physics 2009-11-11 B. Satpati , J. Ghatak , P. V. Satyam , B. N. Dev

Noble metal nanoparticles have been utilized for a vast amount of optical applications. For the applications that used metal nanoparticles as nanosensors and optical labeling, larger radiation damping is preferred (higher optical signal).…

Optics · Physics 2022-03-02 Yanhe Yang , Weihai Ni , Hao Xie , Jian You , Weixiang Ye

We study the blackbody spectrum from slabs of three-dimensional metallodielectric photonic crystals consisting of gold nanoparticles using an ab initio multiple-scattering method. The spectra are calculated for different photonic-crystal…

Other Condensed Matter · Physics 2009-11-11 Vassilios Yannopapas

In this paper, we present a simple and robust numerical method able to predict, with high accuracy, the photo-thermal effects occurring for a gold nanoparticles arrangement under externally applied strain. The physical system is numerically…

Applied Physics · Physics 2020-09-08 Giuseppe E. Lio , Giovanna Palermo , Antonio De Luca , Roberto Caputo

We report on the first detailed measurements of electron backscattering from low Z targets at energies up to 124 keV. Both energy and angular distributions of the backscattered electrons are measured and compared with electron transport…

Nuclear Experiment · Physics 2008-11-26 J. W. Martin , J. Yuan , S. A. Hoedl , B. W. Filippone , D. Fong , T. M. Ito , E. Lin , B. Tipton , A. R. Young

In this work, we present a computational method, based on the Monte Carlo statistical approach, for calculating electron energy emission and yield spectra of metals, such as copper, silver and gold. The calculation of these observables…

The generation and utilization of hot charge carriers in plasmonic materials have emerged as a topic of significant importance, with profound implications across multiple disciplines, including optoelectronics, photovoltaics,…

Monte Carlo simulation code has been developed and tested for studying the passage of charged particle beams and radiation through the crystalline matter at energies from tens of MeV up to hundreds of GeV. The developed Monte Carlo code…

Computational Physics · Physics 2007-05-23 Armen Apyan

In this work, we present new data on the $^{197}$Au photoneutron reactions in and above the giant dipole resonance region, obtained by using 8 to 39~MeV quasi-monochromatic $\gamma$-ray beams produced at the NewSUBARU facility in Japan and…

In this paper, we derive a variance-driven Local-Effect-Model ($\sigma$-LEM) to predict radiosensitization due to gold nanoparticles (AuNP). Assuming that the number of Au photo-ionisations scales strictly with particle volume…

Medical Physics · Physics 2025-07-17 Pedro Teles

A method was developed for measuring photonuclear reactions concurrently at several discrete photon beam energies on a stack of different target materials via a single irradiation. Concentric ring targets of the materials (in order from…

In situ measurement of analytes for in vivo or in vitro systems has been challenging due to the bulky size of traditional analytical instruments. Also, frequent in vitro concentration measurements rely on fluorescence-based methods or…