150 citations · 477 across the 13 of their papers we have counts for
13 papers
Mutual neutralization of C and C ions: Excitation energies and state-selective rate coefficients
Michael Gatchell, Raka Paul, MingChao Ji +6
Context: Mutual neutralization between cations and anions play an important role in determining the charge-balance in certain astrophysical environments. However, empirical data fo…
Cooling of gold cluster anions, Au, , in a cryogenic ion-beam storage ring
Klavs Hansen, Tian Weihao, Emma K. Anderson +9
We have measured the spontaneous and photo-induced decays of anionic gold clusters, Au, with sizes ranging from to 13, and 15. After production in a sputter ion sourc…
Stability of C Knockout Fragments from Femtoseconds to Infinity
Michael Gatchell, Naemi Florin, Suvasthika Indrajith +9
We have studied the stability of C anions as a function of time, from their formation on femtosecond timescales to their stabilization on second timescales and beyond, using…
Spontaneous electron emission from hot silver dimer anions: Breakdown of the Born-Oppenheimer approximation
E. K. Anderson, A. F. Schmidt-May, P. K. Najeeb +8
We report the first experimental evidence of spontaneous electron emission from a homonuclear dimer anion through direct measurements of $\rm{Ag}_2^- \rightarrow \rm{Ag}_2 + \rm{e}…
Spontaneous decay of small copper cluster anions Cu, on long time scales
K. Hansen, M. H. Stockett, M. Kaminska +8
We have measured the spontaneous neutral particle emission from copper cluster anions (Cu, ) stored at cryogenic temperatures in one of the electrostatic ion storage r…
Dianion diagnostics in DESIREE: High-sensitivity detection of from a sputter ion source
K. C. Chartkunchand, M. H. Stockett, E. K. Anderson +14
A sputter ion source with a solid graphite target has been used to produce dianions with a focus on carbon cluster dianions, , with . Singly and doubly c…
Radiative lifetimes of the bound excited states of
K. C. Chartkunchand, M. Kamińska, E. K. Anderson +20
The intrinsic radiative lifetimes of the and bound excited states in the platinum anion have be…
First storage of ion beams in the Double Electrostatic Ion-Ring Experiment - DESIREE
H. T. Schmidt, R. D. Thomas, M. Gatchell +31
We report on the first storage of ion beams in the Double ElectroStatic Ion Ring ExpEriment; DESIREE, at Stockholm University. We have produced beams of atomic carbon anions and sm…
Rotationally cold OH ions in the cryogenic electrostatic ion-beam storage ring DESIREE
H. T. Schmidt, G. Eklund, K. C. Chartkunchand +14
We apply near-threshold laser photodetachment to characterize the rotational quantum level distribution of OH ions stored in the cryogenic ion-beam storage ring, DESIREE, at St…
Photo-stability of super-hydrogenated PAHs determined by action spectroscopy experiments
M. Wolf, H. V. Kiefer, J. Langeland +5
We have investigated the photo-stability of pristine and super-hydrogenated pyrene cations CH) by means of gas-phase action spectrosc…
The lifetime of the bound excited level in Ni
M. Kamińska, V. T. Davis, O. M. Hole +16
The intrinsic lifetime of the upper level in the bound-bound 3d4s D 3d4s D radiative transition in Ni was measured to be 1…
Threshold Energies for Single Carbon Knockout from Polycyclic Aromatic Hydrocarbons
M. H. Stockett, M. Gatchell, T. Chen +6
We have measured absolute cross sections for ultrafast (fs) single-carbon knockout from Polycyclic Aromatic Hydrocarbon (PAH) cations as functions of He-PAH center-of-mass collisio…
Experimental Verification of the Chemical Sensitivity of Two-Site Double Core-Hole States Formed by an X-ray FEL
P. Salen, P. van der Meulen, H. T. Schmidt +16
We have performed X-ray two-photon photoelectron spectroscopy (XTPPS) using the Linac Coherent Light Source (LCLS) X-ray free-electron laser (FEL) in order to study double core-hol…