14234-48-1

Basic information

• Product Name: helium(1+)
• CAS NO: 14234-48-1
• Molecular Formula: He
• Molecular Weight: 4.002602
• Mol File: 14234-48-1.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: helium(1+)(CAS DataBase Reference)
• NIST Chemistry Reference: helium(1+)(14234-48-1)
• EPA Substance Registry System: helium(1+)(14234-48-1)

Safety Data

• Hazardous Substances Data: 14234-48-1(Hazardous Substances Data)

Upstream product

• 12594-29-5 nitric oxide dication 
• 12184-99-5 (helium)2⁽¹⁺⁾ 

Downstream Products

• 14067-05-1 carbon(I) ion 
• 18459-37-5 caesium⁽¹⁺⁾ 
• 22542-11-6 mercury⁽¹⁺⁾ 

Relevant articles and documents

Nascent rovibrational distribution of NO+(A1Π) produced from charge-transfer reaction of He2+ with NO at thermal energy

The NO+(A 1Π-X1∑+) emission resulting from the He2+/NO charge-transfer reaction at thermal energy has been observed in a He flowing afterglow. The vibrational and rotational distributions of NO+(A) were determined from a spectral simulation. The average vibrational and rotational energies deposited into NO+(A) were determined to be 0.22±0.02 and 0.10±0.1 eV, respectively. The vibrational population of NO+(A) decreases rapidly for v′= 0-2 and becomes flat for v′ = 3,4, indicating that the vibrational distribution is bimodal. The bimodal vibrational distribution was explained as due to either two different entrance channels or two different dynamics (Demkov or Landau-Zener type). The rotational distributions were expressed by single Boltzmann temperatures of 1170±100 K.

Formation of He* by ion-ion neutralization reactions of He+ with C6F5X--(X=F, Cl, Br, CF3) in a helium flowing afterglow

The ion-ion neutralization reactions of He+ with C6F5X- (X=F, Cl, Br, CF3) leading to He* have been spectroscopically studied in a helium flowing afterglow. Although both singlet and triplet He* states were formed when X=F and Cl, only triplet He* states were produced when X=Br and CF3. More than 99% of the product He* atoms were formed in the low-lying He(3s, 3p, or 3d) states for all the reactions, and their electronic-state distributions were similar. The electronic-state populations decreased rapidly with increasing excitation energy of He*. They were represented by effective electronic temperatures of 0.070-0.19 eV. The observed electronic-state distributions were compared with those predicted from a simple statistical theory.

Single-electron transfer in collisions of He2+ with NH3 and H2S: Vibrational state populations of NH3+ and H2S+

Single-electron charge transfer between He2+ and NH3 and H2S was investigated at the projectile energy of 70 eV by the translational energy spectroscopy method with a rsolution of 120 meV.The products were He+*(2P) and the ground state molecular ion.Populations of the vibrational states of the molecular ion were derived from the spectra.The vibrational state distributions differ only slightly from the distributions obtained by photoelectron spectroscopy and the differences can be qualitatively accounted for by distortions of the equilibrium configuration of the targed molecule by the approaching ion projectile.