VelocityMapped Ion Imaging of Methyl Nitrite Photodissociation From

Presentation Outline Photodissociation of Methyl Nitrite Predissociation Experiment Ion Imaging Vector Correlations

Nature of the S 1 State Image Credit: Huber, J. , Photodissociation of molecules:

Experimental (355 nm) (224 -227 nm) (308 nm)

Vector Correlations Cont. μ-v μ-j v-j quadratic μ-v-j quartic μ-v-j

Vector Correlation Data 1 0. 75 0. 5 μ-v μ-j 0. 25 v-j quadratic

Vector Correlation Data 1 0. 75 0. 25 0 -0. 25 -0. 5 μ-j

Average Speeds 2000 Transitions vs. Average Speed speed (m/s) 1500 ~1600 1000 500 0

Energy Disposal 60% Percent of Total Energy Contributed by Each Factor in the Photodissociation

Conclusions j v m 60% 50% 40% 30% 20% 10% al l rn In

Acknowledgements National Science Foundation Kalamazoo College Chemistry Department – Hutchcroft Fund. Dr. Bartz, Aidan

Slides: 18

Download presentation

Velocity-Mapped Ion Imaging of Methyl Nitrite Photodissociation From the S 1 State Niclas A. West, Aidan J. Klobuchar, Jeffrey A. Bartz, Department of Chemistry, Kalamazoo College, 1200 Academy Street, Kalamazoo, MI 49006

Presentation Outline Photodissociation of Methyl Nitrite Predissociation Experiment Ion Imaging Vector Correlations

Methyl Nitrite (Molecule info) (355 nm)

Nature of the S 1 State Image Credit: Huber, J. , Photodissociation of molecules: the microscopic path of a molecular decay, Pure & Appl. Chem. , Vol. 60, No. 7, 1988, pp. 947

Experimental (355 nm) (224 -227 nm) (308 nm)

Ion Imaging Animation

Ion Images

Ion Images (Q 11+P 21: vv, vh, hv)

Data Fitting

Vector Correlations j v m j m v

Vector Correlations Cont. μ-v μ-j v-j quadratic μ-v-j quartic μ-v-j

Vector Correlation Data 1 0. 75 0. 5 μ-v μ-j 0. 25 v-j quadratic μ-v-j 0 -0. 25 -0. 5 quartic μ-v-j 0 2 4 6 8 10 12 14 16 18

Vector Correlation Data 1 0. 75 0. 25 0 -0. 25 -0. 5 μ-j 0 2 4 6 8 10 12 14 16 18

Vector Correlations Cont. μ-v μ-j v-j quadratic μ-v-j quartic μ-v-j

Average Speeds 2000 Transitions vs. Average Speed speed (m/s) 1500 ~1600 1000 500 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Energy Disposal 60% Percent of Total Energy Contributed by Each Factor in the Photodissociation of CH 3 ONO 50% 40% 30% 20% 10% 0% CH 3 O-NO NO Vibrational NO Translational CH 3 O Translational NO Rotational CH 3 O Internal

Conclusions j v m 60% 50% 40% 30% 20% 10% al l rn In te CH 3 O tio N O Ro ta tio sla an Tr 3 O CH na l na na tio sla an Tr O N N O Vi br 3 O at io -N na l l O 0% CH Image Credit: Huber, J. , Photodissociation of molecules: the microscopic path of a molecular decay, Pure & Appl. Chem. , Vol. 60, No. 7, 1988, pp. 947 Percent of Total Energy Contributed by Each Factor in the Photodissociation of CH 3 ONO

Acknowledgements National Science Foundation Kalamazoo College Chemistry Department – Hutchcroft Fund. Dr. Bartz, Aidan Klobuchar, and Kelsey Breck.