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Biomolecular ions in accelerators and storage rings
SB Nielsen, JU Andersen, P Hvelplund… - Journal of Physics B …, 2004 - iopscience.iop.org
Recent experiments on biomolecules in accelerators and storage rings are reviewed. Topics
included are measurements of geometrical cross sections of macromolecular ions …
included are measurements of geometrical cross sections of macromolecular ions …
Theoretical study of ionization potentials and dissociation energies of fullerenes 1 and 2)
We have evaluated electronic energies of neutral, singly charged and doubly charged
fullerenes with sizes n= 50–60 using density functional (DFT) theory. For each value of the …
fullerenes with sizes n= 50–60 using density functional (DFT) theory. For each value of the …
Electronic response of in slow collisions with highly charged ions
H Cederquist, A Fardi, K Haghighat, A Langereis… - Physical Review A, 2000 - APS
We present measurements of projectile angular differential cross sections, d σ/d θ, and
mean projectile energy gain or loss, Δ E mean, as functions of the number s of electrons …
mean projectile energy gain or loss, Δ E mean, as functions of the number s of electrons …
The histidine effect. Electron transfer and capture cause different dissociations and rearrangements of histidine peptide cation-radicals
F Turecek, TW Chung, CL Moss, JA Wyer… - Journal of the …, 2010 - ACS Publications
Electron-transfer and-capture dissociations of doubly protonated peptides gave dramatically
different product ions for a series of histidine-containing pentapeptides of both non-tryptic …
different product ions for a series of histidine-containing pentapeptides of both non-tryptic …
Electronic excitation in collisions: Evaporation and ionization
J Opitz, H Lebius, S Tomita, BA Huber, PM Capelle… - Physical Review A, 2000 - APS
We have studied energy transfer, fragmentation, and ionization in collisions between
protons and C 60 molecules. The collision energy is varied between 1 and 300 keV and we …
protons and C 60 molecules. The collision energy is varied between 1 and 300 keV and we …
Fast side-chain losses in keV ion-induced dissociation of protonated peptides
In this paper, we compare ionization and dissociation of a series of singly and doubly
protonated peptides, namely leucine enkephalin, bradykinin, LHRH and substance P as …
protonated peptides, namely leucine enkephalin, bradykinin, LHRH and substance P as …
Unimolecular dissociation of anthracene and acridine cations: The importance of isomerization barriers for the C2H2 loss and HCN loss channels
HAB Johansson, H Zettergren, AIS Holm… - The Journal of …, 2011 - pubs.aip.org
The loss of C 2 H 2 is a low activation energy dissociation channel for anthracene (C 14 H
10) and acridine (C 13 H 9 N) cations. For the latter ion another prominent fragmentation …
10) and acridine (C 13 H 9 N) cations. For the latter ion another prominent fragmentation …
[HTML][HTML] On the survival of peptide cations after electron capture: Role of internal hydrogen bonding and microsolvation
T Chakraborty, AIS Holm, P Hvelplund… - Journal of the American …, 2006 - Elsevier
Electron capture by both bare and microsolvated small peptide dications was investigated
by colliding these ions with sodium vapor in an accelerator mass spectrometer to provide …
by colliding these ions with sodium vapor in an accelerator mass spectrometer to provide …
On the Mechanism of Electron-Capture-Induced Dissociation of Peptide Dications from 15N-Labeling and Crown-Ether Complexation
AIS Holm, P Hvelplund, U Kadhane… - The Journal of …, 2007 - ACS Publications
15N-labeling of di-and tripeptides reveals that electron capture to doubly protonated
peptides results almost exclusively in ammonia loss from the N-terminal end, which clearly …
peptides results almost exclusively in ammonia loss from the N-terminal end, which clearly …
Stability and Structure of Protonated Clusters of Ammonia and Water, H+(NH3)m (H2O)n
P Hvelplund, T Kurten, K Støchkel… - The Journal of …, 2010 - ACS Publications
Mass spectrometric experiments show that protonated mixed ammonia/water clusters
predominant exist in three forms namely H+ (NH3) 4 (H2O) n, H+ (NH3) 5 (H2O) n, and H+ …
predominant exist in three forms namely H+ (NH3) 4 (H2O) n, H+ (NH3) 5 (H2O) n, and H+ …