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proton-helium collisions (22) 22
physics, atomic, molecular & chemical (15) 15
optics (14) 14
ion-atom collisions (10) 10
excitation (9) 9
differential cross-sections (8) 8
scattering (8) 8
charge-transfer (6) 6
helium (6) 6
hydrogen (6) 6
physics, multidisciplinary (6) 6
atomic and molecular physics (5) 5
collisions (5) 5
impact (5) 5
intermediate energies (5) 5
protons (5) 5
recoil-ion (5) 5
atom collisions (4) 4
electron capture (4) 4
electron-capture (4) 4
electrons (4) 4
ionization (4) 4
ions (4) 4
physics (4) 4
astronomy & astrophysics (3) 3
atom-ion collisions (3) 3
density-matrices (3) 3
double-charge-exchange (3) 3
double-electron-capture (3) 3
energy (3) 3
energy range (3) 3
he collisions (3) 3
helium ions (3) 3
ion momentum spectroscopy (3) 3
momentum spectroscopy (3) 3
saddle-point electrons (3) 3
time dependence (3) 3
atomic-hydrogen (2) 2
coupling (2) 2
cross sections (2) 2
cross-sections (2) 2
dynamics (2) 2
electron correlation (2) 2
elements (2) 2
emission (2) 2
h(n = 2 (2) 2
h+-he collisions (2) 2
hadrons (2) 2
he-2 (2) 2
helium neutral atoms (2) 2
highly-charged ions (2) 2
ion collisions (2) 2
ionization cross-sections (2) 2
kev range (2) 2
nonmetals (2) 2
nuclei (2) 2
physics - atomic physics (2) 2
projectile scattering angles (2) 2
proton helium collisions (2) 2
quantum theory (2) 2
rare-gas atoms (2) 2
research (2) 2
resolved double photoionization (2) 2
single-ionization (2) 2
spectroscopy (2) 2
transfer cross-sections (2) 2
1st-order born approximation (1) 1
2-electron (1) 1
2-electron capture (1) 1
70 plasma physics and fusion technology (1) 1
alpha-particles (1) 1
analysis (1) 1
angle (1) 1
angular scattering (1) 1
angular-distribution (1) 1
antiparticles (1) 1
antiproton (1) 1
antiprotons (1) 1
approximation (1) 1
approximations (1) 1
argon (1) 1
astronomy, observations and techniques (1) 1
astrophysics and astroparticles (1) 1
asymmetry (1) 1
atom-atom collisions (1) 1
atomic systems (1) 1
atoms (1) 1
atoms & subatomic particles (1) 1
balmer lines (1) 1
bare (1) 1
baryons (1) 1
boundary conditions (1) 1
break-up processes (1) 1
capture (1) 1
capture cross-sections (1) 1
ch4 (1) 1
charge (1) 1
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charge-transfer collisions (1) 1
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Astronomische Nachrichten, ISSN 0004-6337, 12/2017, Volume 338, Issue 9-10, pp. 1113 - 1117
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 10/2009, Volume 80, Issue 4
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 10/2009, Volume 80, Issue 4
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 2006, Volume 74, Issue 3
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 07/2010, Volume 82, Issue 1
Journal Article
Journal of Geophysical Research: Space Physics, ISSN 2169-9380, 04/2013, Volume 118, Issue 4, pp. 1366 - 1378
Relative motion of the Sun with respect to the surrounding local interstellar medium results in entering of interstellar helium atoms into the heliosphere.... 
proton‐helium collisions | heliosphere | elastic collisions | interstellar helium | collisional heating | solar wind | proton-helium collisions | INTERPLANETARY LYMAN-ALPHA | PARAMETERS | RADIATION | HYDROGEN | TEMPERATURE | ASTRONOMY & ASTROPHYSICS | NEUTRAL-GAS | HE | SCATTERING | CYCLE | Protons | Atoms & subatomic particles | Solar physics | Helium
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 11/2014, Volume 90, Issue 5
We investigate theoretically the single and double ionization of the He atom by antiproton impact for projectile energies ranging from 3 keV up to 1000 keV. We... 
CLASSICAL-THEORY | HYDROGEN | ENERGY | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | PEAK | OPTICS | CHARGE-TRANSFER | PROTON-HELIUM | COLLISIONS | Physics - Atomic Physics
Journal Article
Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, 07/1997, Volume 30, Issue 13, pp. 2917 - 2974
Journal Article
PHYSICAL REVIEW A, ISSN 1050-2947, 06/2009, Volume 79, Issue 6
Using the cold target recoil ion momentum spectroscopy technique, we have measured state-selective projectile scattering angles for single and double electron... 
atom-ion collisions | ALPHA-PARTICLES | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | ATOMIC SYSTEMS | PROTON-HELIUM COLLISIONS | ION MOMENTUM SPECTROSCOPY | positive ions | WAVE-FUNCTIONS | helium ions | 2-ELECTRON CAPTURE | hydrogen ions | RECOIL-ION | DOUBLE-CHARGE-EXCHANGE | helium neutral atoms | OPTICS | electron capture | SCATTERING | HIGH-IMPACT ENERGIES
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 11/2012, Volume 86, Issue 5
State-selective electron capture cross sections and projectile scattering-angle differential cross sections for single-electron capture in collisions of... 
RECOIL-ION | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | DYNAMICS | PROTON-HELIUM COLLISIONS | OPTICS | ION MOMENTUM SPECTROSCOPY | SCATTERING
Journal Article
Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, 09/2000, Volume 33, Issue 17, pp. L629 - L634
We have measured the projectile momentum distributions for single ionization in 50 to 150 keV proton-helium collisions as a function of both the longitudinal... 
IMPACT | ELECTRONS | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | IONS | PROTON-HELIUM COLLISIONS | OPTICS | IONIZATION CROSS-SECTIONS
Journal Article
PHYSICAL REVIEW A, ISSN 1050-2947, 02/2007, Volume 75, Issue 2
We have measured differential double capture cross sections for 15 to 150 keV p+He collisions. We also analyzed differential double to single capture ratios,... 
MOMENTUM SPECTROSCOPY | ATOMIC-HYDROGEN | DOUBLE CHARGE-EXCHANGE | HIGH-VELOCITY | ENERGY RANGE | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | DOUBLE-EXCITATION | INERT-GASES | DOUBLE-ELECTRON-CAPTURE | PROTON-HELIUM COLLISIONS | OPTICS | DOUBLE-IONIZATION
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 1996, Volume 54, Issue 4, pp. 2951 - 2961
We have measured and calculated doubly differential single-ionization cross sections for 50-150-keV p+He collisions as a function of the projectile energy loss... 
IMPACT | ASYMMETRY | EXCITATION | CONTINUUM STATES | PROTON-HELIUM COLLISIONS | ION-ATOM COLLISIONS | PHYSICS | SPECTRA | EMISSION | ELECTRON-CAPTURE | INTERMEDIATE ENERGIES
Journal Article
Journal of Mathematical Chemistry, ISSN 0259-9791, 2010, Volume 47, Issue 4, pp. 1 - 48
Journal Article
Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, 03/1994, Volume 27, Issue 5, pp. 935 - 942
The classical trajectory Monte Carlo method is used to calculate coherence parameters for electron capture to H(n = 2, 3 and 4) in 30 to 250 keV H+ + He... 
H(N = 2 | HE COLLISIONS | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | DIFFERENTIAL CROSS-SECTIONS | IONS | PROTON-HELIUM COLLISIONS | OPTICS | CHARGE-TRANSFER | H+-HE | INTERMEDIATE ENERGIES | DIPOLE-MOMENTS | DENSITY-MATRICES
Journal Article
Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, 01/1993, Volume 26, Issue 1, pp. 1 - 42
We review recent advances in the coherent excitation during atomic collisions. Special attention is paid to alignment and orientation of the excited charge... 
LYMAN-ALPHA RADIATION | H+-HE COLLISIONS | COUPLED-STATE CALCULATIONS | RARE-GAS ATOMS | N = 2 | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | INITIAL ORBITAL ALIGNMENT | PROTON-HELIUM COLLISIONS | TRANSFER CROSS-SECTIONS | OPTICS | PHOTON COINCIDENCE EXPERIMENT | CHARGE-EXCHANGE EXCITATION
Journal Article