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The dissociative photoionization of \textit{tert}-butyl methyl methacrylate, a monomer unit found in many ESCAP resists, was investigated in a gas phase photoelectron photoion coincidence experiment employing extreme ultraviolet (EUV)…

A new collection of photodissociation and photoionisation cross sections for 102 atoms and molecules of astrochemical interest has been assembled, along with a brief review of the basic processes involved. These have been used to calculate…

太阳与恒星天体物理 · 物理学 2017-06-28 A. N. Heays , A. D. Bosman , E. F. van Dishoeck

We study the role of steric effects on the induced-charge electro-osmosis (ICEO) phenomenon using a recently developed mesoscale fluid model. A hybrid Eulerian-Lagrangian method is used to simulate the dynamics of discrete immersed ions in…

Recent measurements by various experiments in ultra-peripheral collisions have observed spin-interference in $\rho^{0}$ photoproduction, marking a breakthrough in Fermi-scale quantum interference experiments. Building on this, STAR extended…

核理论 · 物理学 2025-09-24 Yusong Wang , Xinbai Li , Ziyang Li , Zebo Tang , Xin Wu , Wangmei Zha

We study the isomer-specific photoionization and photofragmentation of 1,2- dibromoethene (DBE) under strong-field fs-laser irradiation in the gas phase complementing previous studies utilising ns- and ps-laser excitation. Our findings are…

化学物理 · 物理学 2025-04-30 A. Mishra , J. Kim , S. K. Kim , S. Willitsch

The charmonium dissociation by mesons in relativistic heavy-ion reactions is analyzed within the Regge approach. It is shown that the inclusion of the initial and final state interactions in the dissociation of J/Psi to bar{D}* D* close to…

高能物理 - 唯象学 · 物理学 2008-11-26 Gennady I. Lykasov , Wolfgang Cassing

Photodissociation by ultraviolet radiation is the key destruction pathway for CS in photon-dominated regions, such as diffuse clouds. However, the large uncertainties of photodissociation cross sections and rates of CS, resulting from a…

星系天体物理 · 物理学 2019-09-11 Zhongxing Xu , Nan Luo , S. R. Federman , William M. Jackson , Cheuk-Yiu Ng , Lee-Ping Wang , Kyle N. Crabtree

Absolute photoionization cross-section measurements are reported for Se+ in the photon energy range 18.0-31.0 eV, which spans the ionization thresholds of the 4S_{3/2} ground state and the low-lying 2P_{3/2,1/2} and 2D_{5/2,3/2} metastable…

Strong field ionization provides a unique mean to address complex dynamics of an electron in competing Coulomb and laser fields. Recent streak camera experiment (K\"ubel, et al., Phys. Rev. Lett. 119, 183201) analyzed asymmetries in the…

The interaction of polycyclic aromatic hydrocarbons (PAHs) with vacuum ultraviolet (VUV) photons triggers the emission of the well-known aromatic infrared bands (AIBs) but other mechanisms such as fragmentation can be involved in this…

星系天体物理 · 物理学 2021-08-12 Alexandre Marciniak , Christine Joblin , Giacomo Mulas , Venkat Rao Mundlapati , Anthony Bonnamy

High magnetic fields in neutron stars, B ~ 10^{11} - 10^{13} G, substantially modify the properties of atoms and their interaction with radiation. In particular, the photoionization cross section becomes anisotropic and strongly…

atom-ph · 物理学 2008-02-03 A. Y. Potekhin , G. G. Pavlov , J. Ventura

Photoionization of the Ce$^{3+}$ - Ce$^{4+}$ process has been studied using the random phase approximation with exchange method in the energy region 100-150 eV. Comparison of our results with the recent measurement [M\"uller {\it et al},…

原子物理 · 物理学 2015-05-13 Zhifan Chen , Alfred Z. Msezane

We calculate angle-resolved above-threshold ionization spectra for diatomic molecules in linearly polarized laser fields, employing the strong-field approximation. The interference structure resulting from the individual contributions of…

原子物理 · 物理学 2009-11-13 H. Hetzheim , C. Figueira de Morisson Faria , W. Becker

The cross sections for the $^{12}\mathrm{C}(\gamma,\alpha)^{8}\mathrm{Be}\rightarrow 3\alpha$ reaction have been successfully measured using exclusive coincidence between three $\alpha$ particles, minimizing Compton background. Sequential…

Spin alignments of vector mesons and hyperons in relativistic heavy-ion collisions have been proposed as signals of the global polarization. The STAR experiment first observed the $\rm \Lambda$ polarization. Recently, the ALICE…

核实验 · 物理学 2021-05-26 Diyu Shen , Jinhui Chen , Zi-Wei Lin

The optical properties of chromophores can be efficiently tuned by electrostatic fields generated in their close environment, a phenomenon that plays a central role for the optimization of complex functions within living organisms where it…

We consider the excitation dynamics of the two-photon \sts transition in a beam of atomic hydrogen by 243 nm laser radiation. Specifically, we study the impact of ionization damping on the transition line shape, caused by the possibility of…

The system of CH$_3$I adsorbed on submonolayer, monolayer and multilayer thin films of D$_2$O on Cu(110) has been studied by measuring the time-of-flight (TOF) distributions of the desorbing CH$_3$ fragments after photodissociation using…

化学物理 · 物理学 2021-01-18 E. R. Miller , G. D. Muirhead , E. T. Jensen

The presented results are the first measurements at RHIC for direct $\gamma$-charged hadron azimuthal correlations in heavy ion collisions. We use these correlations to study the color charge density of the medium through the medium-induced…

核实验 · 物理学 2009-07-22 Ahmed M. Hamed

We study the acceleration of heavy nuclei at SNR shocks taking into account the process of ionization. In the interstellar medium atoms heavier then hydrogen which start the diffusive shock acceleration (DSA) are never fully ionized at the…

高能天体物理现象 · 物理学 2015-05-20 Giovanni Morlino
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