Knowledge Bank

The 3460 - 3015 {\AA} band system of $I2$ has been tentatively $assigned1$ to the $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Pi$ $\to$ $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Pi 2u$ transition of $I2$. In the course of investigating this system as a candidate for an e-beam initiated laser the collision deactivation rates of the 3427 {\AA} vibrational band by argon and krypton were measured. In addition, the collisional deactivation rate of the 3427 {\AA} vibrational band by ground state $I2$ was measured and an estimate of the Lifetime of the upper state of the 3427 {\AA} transition was obtained.