The Probability of Collision for Slow ${\mathrm{H}}^{+}$, ${\left({\mathrm{H}}^1{\mathrm{H}}^1\right)}^{+}$, ${\left({\mathrm{H}}^1{\mathrm{H}}^2\right)}^{+}$, ${\left({\mathrm{H}}^2{\mathrm{H}}^2\right)}^{+}$, ${\left({\mathrm{H}}^2\right)}^{+}$ and ${\mathrm{He}}^{+}$ Ions in Argon

The probability of collision $P_c$ for slow ${\mathrm{H}}^{+}$, ${\left({\mathrm{H}}^1{\mathrm{H}}^1\right)}^{+}$, ${\left({\mathrm{H}}^1{\mathrm{H}}^2\right)}^{+}$, ${\left({\mathrm{H}}^2{\mathrm{H}}^2\right)}^{+}$, ${\left({\mathrm{H}}^2\right)}^{+}$ and ${\mathrm{He}}^{+}$ ions in argon has been measured. The energy range studied was 225 to 4200 volts for the ${\mathrm{H}}^{+}$ and ${\left({\mathrm{H}}^1{\mathrm{H}}^1\right)}^{+}$ ions, 225 to 1300 volts for the ${\left({\mathrm{H}}^1{\mathrm{H}}^2\right)}^{+}$, ${\left({\mathrm{H}}^2{\mathrm{H}}^2\right)}^{+}$ and ${\mathrm{He}}^{+}$ ions and 300 to 1225 volts for the deuteron hydrogen molecular ion ${\left({\mathrm{H}}^1{\mathrm{H}}^1\right)}^{+}$ beam. The probability of collision for the ${\left({\mathrm{H}}^1{\mathrm{H}}^1\right)}^{+}$ ion decreased from a value of $P_c=56\mathrm{}$ at 225 volts to a minimum value of 48 at 784 volts with a subsequent increase to $P_c=57\mathrm{}$ at 3840 volts. The proton curve increases from $P_c=38\mathrm{}$ at 225 volts to $P_c=46\mathrm{}$ at 4220 volts. It gradually flattens out at the higher voltages. The ${\left({\mathrm{H}}^1{\mathrm{H}}^2\right)}^{+}$ and ${\left({\mathrm{H}}^2{\mathrm{H}}^2\right)}^{+}$ curves remain nearly constant at $P_c\cong 41 \mathrm{and} 39$,...