1. A Chirped Pulse Fourier Transform Microwave (CP-FTMW) Spectrometer with Laser Ablation Source to Search for Actinide-Containing Molecules and Noble Metal Clusters
F. E. Marshall, David Joseph Gillcrist, Thomas D. Persinger, Nicole Moon, and G. S. Grubbs II
71st International Symposium on Molecular Spectroscopy
June 20-24, 2016, Urbana-Champaign, IL, USA; MJ12

2. Systems of Interest- Actinide-Containing Molecules
Spin-Orbit Interactions
Computational Difficulties
f-electron Chemistry

3. Systems of Interest- Noble Metal Clusters
Picture taken from D. J. Frohman, G. S. Grubbs II, Z. Yu and S. E. Novick, "Probing the Chemical Nature of Dihydrogen Complexation to Transition Metals, a Gas Phase Case Study: H2–CuF." Inorg. Chem. 2013, 52,
Picture taken from K. Duanmu and D. G. Truhlar, "Partial Ionic Character beyond the Pauling Paradigm: Metal Nanoparticles." J. Phys. Chem. C 2014, 118,
Heterogeneous Catalysis (preferential sites for CO + O2 to give CO2, etc.)
Fundamental Interest (dipole moments that break the Pauling Model; typical vdW bonding interactions with Noble Metal species have resulted in covalent bond tendencies)

4. Previous Work- Brooks Pate

5. Previous Work- Brooks Pate
C. Pérez, M. T. Muckle, D. P. Zaleski, N. A. Seifert, B. Temelso, G. C. Shields, Z. Kisiel, B. H. Pate, Science, 336(2012), No. 6083, 897.

6. Previous Work- Steve Cooke

7. Previous Work- Steve Cooke
G. S. Grubbs II, C. T. Dewberry, K. C. Etchison, K. E Kerr, and S. A. Cooke Rev. Sci. Instr. 78 (2007)

8. Our CP-FTMW

9. Our CP-FTMW
Top: A 9-15 GHz sweep of 3% OCS in Ar after 30,000 averaging cycles. Transitions have been identified for minor isotopologue and vibrationally excited species of OCS as well as Ar and H2O dimer species. Bottom: A zoom-in of the MHz to MHz region showing isotopic and quadrupole levels of resolution with the technique.

10. Our CP-FTMW
Schematic of the CP-FTMW with laser ablation source. The components are: 1. SRS® FS MHz Rb frequency standard; 2. SRS® FS725 Signal Distributor; 3. Tektronix® AWG70001A 20 GHz/50 GS/s Arbitrary Waveform Generator; 4. Microsemi® L T GHz, 40W Power Amplifier; 5. Q-par® QWH-SL-2-18-S-HG-R 2-18 GHz High Gain, Broadband Horn Antennae; 6. Advanced Technical Materials® S1517D GHz, 75 W Pin Diode SPST Switch; 7. Miteq® AMF-7D P Low Noise Amplifier, 55 dB, 1-18 GHz; 8. Tektronix® DPO72304DX 23 GHz/100 GS/s Digital Phosphor Oscilloscope; 9. Quantum Composers® Pulse Generator; 10. Parker® Series 9 Solenoid Valve with Walker-Gerry Ablation Attachment; 11. Continuum® Minilite II 50 nm pulsed Nd:YAG Laser, 15 Hz.

11. Laser Ablation Setup
LASER

12. Laser Ablation Setup

13. Laser Ablation Setup

14. Laser Ablation Setup

15. Our LA-CMB-CP-FTMW

16. Acknowledgements
Missouri S&T Startup
UM Research Board Grant