There are currently 122,612 datasets. Click here for advice on specifying species and states.

Please contact ch.hill@iaea.org with any questions or comments about this prototype data service.

ⓘ Reactant 1:

ⓘ Reactant 2:

ⓘ Product 1:

ⓘ Product 2:

Specify reactant and product species and states using the pyvalem notation described here.
Some examples are: Be+2 or Be III, HD X(1SIGMA+g) v=4, and N 4S.

ⓘ DOI:

ⓘ Author:

ⓘ Method:

--------- Experiment Theory Semi-Empirical Estimate

ⓘ Data Type:

--------- Cross Section Differential Cross Section Rate Coefficient

ⓘ Process Types:

COM: Composite Process with Multiple Channels EAE: Auger Electron Ejection EAS: Angular Scattering EBS: Bremsstrahlung EDA: Dissociative Attachment EDC: Dielectronic Capture EDE: Dissociative Excitation EDI: Dissociative Ionization EDP: Depolarization, Change of Polarization EDR: Dissociative Recombination EDS: Dissociation EDT: Electron Detachment EDX: De-excitation EEL: Elastic Scattering EEX: Excitation EFL: Fluorescence (Optical Emission) EGN: General EHT: Transport EIN: Ionization EIP: Ion-Pair Formation ELB: Line Broadening, Shapes and Shifts EMI: Multiple Ionization EMT: Momentum Transfer ENI: Negative Ion Formation ERC: Recombination ERD: Dielectronic Recombination ERO: Electron-Ion-Other Recombination ERR: Radiative Recombination ERT: Three-Body Recombination ERV: Rovibrational Excitation ESF: Spin-Flip ETS: Total Scattering EUP: Unknown Products EXE: Electronic Excitation EXR: Rotational Excitation EXV: Vibrational Excitation HAC: Association HAI: Associative Ionization HAR: Radiative Association HAS: Angular Scattering HAT: Attenuation HCX: Charge Transfer HDC: Dissociative Charge Transfer HDE: Dissociative Excitation HDI: Dissociative Ionization HDN: Dissociative Neutralization HDS: Dissociation HDT: Detachment HDX: De-excitation HEL: Inelastic Energy Losses HES: Elastic Scattering HET: Energy Transfer HEX: Excitation HFL: Fluorescence HGN: General HHT: Transport HIN: Ionization HIP: Interaction Potentials HIR: Interchange Reactions HLB: Line Broadening, Shapes and Shifts HMI: Multiple Ionization HMN: Mutual Ion-Ion Neutralization HMT: Momentum Transfer HPN: Penning Ionization HRC: Recombination HRV: Rovibrational Excitation HST: Electron-Stripping HTE: Electron Transfer HTI: Transfer Ionization HTS: Total Scattering HUP: Unknown Products HXE: Electronic Excitation HXF: Fine-Level Excitation HXH: Hyperfine Excitation HXR: Rotational Excitation HXT: Excitation Transfer HXV: Vibrational Excitation MAC: Accomodation MAD: Adsorption MBS: Backscattering MCP: Charge State Population MCR: Chemical Reactions MCS: Chemical Sputtering MDE: Desorption MDP: Deposition MEL: Energy Loss and Stopping Power MEP: Excited State Population MER: Erosion MGN: General MIR: Particle-Impact Induced Radiation MMS: Multiple Scattering MNE: Neutralization, Ionization, Dissociation MPE: Photoelectric Ejection of Electrons MPM: Permeation MPR: Particle Range MPS: Physical Sputtering MRE: Reemission MRF: Reflection MRH: Reflection of Heavy Particles from Surfaces MRL: Reflection of Electrons from Surfaces MRS: Radiation-Enhanced Sublimation MSD: Surface Damage MSE: Secondary Electron Emission MSI: Surface Interactions MSP: Sputtering MTD: Trapping, Detrapping MTR: Transmutation MVP: Vapour Formation and Properties PAD: Scattering PAE: Auger Electron Ejection PCS: Compton Scattering PDP: Depolarization, Change of Polarization PDS: Photodissociation PDT: Photodetachment PEA: Effective Absorption, Total Diffusion PED: Elastic Diffusion PES: Elastic Scattering PEX: Photoexcitation PFF: Inverse Bremsstrahlung PFL: Fluorescence PGF: General Electromagnetic Field PGN: General PIN: Photoionization PIP: Ion-Pair Formation PMA: Multiphoton Excitation PNL: Non-Linear Effects PRD: Radiative Decay PRV: Rovibrational Excitation PSE: Stark Effect PTA: True Absorption PTF: Interaction with Time-Varying Fields PTS: Total Absorption, Total Scattering PXE: Electronic Excitation PXR: Rotational Excitation PXV: Vibrational Excitation PZE: Zeeman Effect SAD: Autodetachment SAI: Autoionization SDP: Dynamic Polarizability SDS: Autodissociation SEW: Energy Levels and Wavelengths SFT: Forbidden Transitions SGN: General SHF: Hyperfine Structure SIA: Interatomic Potentials SIE: Isoelectronic sequences SIP: Ionization Potentials SIR: Infrared Spectra SLS: Line Broadening, Shapes and Shifts SMM: Magnetic Moments SPM: Polarizabilities, Electric Moments SQE: QED Effects SRA: Raman spectroscopy SRP: Relaxation Processes SRS: Rotational Spectra SRY: Rydberg States SSM: Potential Curves and Structure of Molecules STP: Transition Probabilities and Oscillator Strengths SUV: UV/VUV/XUV Spectra SVB: Vibrational Spectra SVS: Visible Spectra SXR: X-Ray Spectra

A description of three-letter process codes is given here.
Select multiple Keywords by clicking whilst holding down CTRL (Windows, Linux) or CMD (⌘) (macOS)

ⓘ Evaluated only:

ⓘ Valid on:

Leave unset for the most recent data.

Search Clear

169 Results

Download these data

• 120309 | \(\mathrm{H}^{+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{H} \; n=1 + \mathrm{He}^{+} \; 1s\)
• 120310 | \(\mathrm{H}^{+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{H} \; n=2 + \mathrm{He}^{+} \; 1s\)
• 120311 | \(\mathrm{H}^{+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{H} \; n=3 + \mathrm{He}^{+} \; 1s\)
• 120312 | \(\mathrm{H}^{+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{H} \; n=4 + \mathrm{He}^{+} \; 1s\)
• 120313 | \(\mathrm{H}^{+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{H} \; n=5 + \mathrm{He}^{+} \; 1s\)
• 120315 | \(\mathrm{H}^{+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{H} \; n=6 + \mathrm{He}^{+} \; 1s\)
• 120316 | \(\mathrm{H}^{+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{H} \; n=7 + \mathrm{He}^{+} \; 1s\)
• 120317 | \(\mathrm{H}^{+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{H} \; n=8 + \mathrm{He}^{+} \; 1s\)
• 120318 | \(\mathrm{He}^{2+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{He}^{+} \; n=1 + \mathrm{He}^{+} \; 1s\)
• 120319 | \(\mathrm{He}^{2+} + \mathrm{He} \; 1s^{2} \rightarrow \mathrm{He}^{+} \; n=2 + \mathrm{He}^{+} \; 1s\)

Citation: Users are encouraged to cite the original data provider(s) with the references provided in the metadata associated with each dataset. The CollisionDB database may also be cited as CollisionDB: A database of collisional processes in plasmas, https://amdis.iaea.org/db/collisiondb/, International Atomic Energy Agency (2022).