1. Measurement of Nitrogen Hyperfine Structure On The 53 cm (562 MHz) Butyronitrile Line
Christopher T. Dewberry, Garry S. Grubbs II, Andrew Raphelt, and Stephen A. Cooke

2. Salad Bowls
Preliminary Test

3. Low Frequency Circuit
# 10, Low Noise Amplifier: Lucix S001040L4501 (1 – 4 GHz, gain 45 dB, noise figure 1.5 dB) Miteq AMF-6F P (0.1 – 4 GHz, gain 65 dB, noise figure 1dB)
K. C. Etchison et al., Journal of Molecular Spectroscopy, 242, (2007).

4. Other Work Bromobenzene 10000 Shots Tuned to 1814.6 MHz 10-15-2006
Iodobenzene
5002 Shots Tuned to MHz
Methanol
22561 Shots Tuned to MHz

5. Previous Studies Gauche Butyronitrile
E. Hirota, J. Chem. Phys. 37, 2918 (1962).
K. Vormann and H. Dreizler, Z. Naturforsch. 43a, (1988).

6. 1st Look at Butyronitrile
2421 Shots
Tuned to 562.2
26724 Shots
Tuned to MHz

7. Getting Low
5500 Shots
Tuned to MHz
Old Amp at 15V

8. Different Amp
4000 Shots
Tuned to MHz
New Amp at 11.15V

9. Voltage Test 51 Shots 9V 50 Shots 11V 50 Shots 10V 52 Shots 12V

10. 12000 Shots
Tuned to MHz
New Amp at 11.15V
10000 Shots Background
Tuned to MHz
New Amp at 11.15V

11. Tried Out Perpendicular Orientation
10650 Shots
Perpendicular Orientation
12000 Shots
Coaxial Orientation

12. Chamber Microwave Test

13. Resulting Dead Zones
Rough Two Dimensional Sketch when tuned to 562.4MHz

14. To A New Dimension

15. 3-D Microwave Field
Side View
Backside View
Top View

16. Different Antenna Size
14427 Shots
Tuned to MHz
3 1/8’’ Antenna
12403 Shots
Tuned to MHz
6’’ Antenna

17. Gauche Butyronitrile: Low Transitions

18. Gauche Butyronitrile: Rotational Constants
K. Vormann, H. Dreizler, Z. Naturforsch. 43a, (1988).
A. Belloche et al., Astro-ph. Manuscript (2009).

19. The Next Step Conduct mathematical modeling of Microwave Field
Determine a fit including quadrupole coupling constants and internal rotation

20. Wave of The Future
Low Frequency 1-2 GHz Chirp Pulse Waveguide

21. Acknowledgements National Science Foundation (NSF)
Dr. Steve Cooke, Andrew Raphelt, Kerry Etchison, and Garry “Smitty” Grubbs II

24. Trans Butyronitrile: Rotational Constants
K. Vormann, H. Dreizler, Z. Naturforsch. 43a, (1988).
A. Belloche et al., Astro-ph. Manuscript (2009).

25. Previous Studies Gauche Butyronitrile Trans Butyronitrile
E. Hirota, J. Chem. Phys. 37, 2918 (1962).
K. Vormann and H. Dreizler, Z. Naturforsch. 43a, (1988).

26. Measurement of Nitrogen Hyperfine Structure On The 53 cm (562 MHz) Butyronitrile Line
Christopher T. Dewberry, Garry S. Grubbs II, Andrew Raphelt, and Stephen A. Cooke

28. Stuff To Do Put Salad Bowls in Solid Works
Find Focal Point test for Antenna in old Notebooks
Find Pics of Spectra, go through all spectra
Make visual Appealing Results for Dead Zones
Figure out Internal Rotation
Add Chemical Stuff

29. Talk About Methanol (1 sentence)
Explain Why B-Nitrile is interesting
Explain Constants and why valid or internal rotation stuff

30. Hirota Paper Notes
Dipole moments of Gauche: Uc2 is 1/13 the size of Ua2, so only a b type transitions assigned
For Trans, K-1=2 is the best for seeing doubling (internal rotation?)
Suspect that Gauche and trans energy difference is less than 1 kcal

31. Mollendal Paper Notes
Anti(aka trans) is more stable than gauche by about 1.1 kJ/mol (At room temp and -40 Celsius
In other studies of n-propyl frame the gauche was more stable (F, Cl, NC???, C=CH)
Candidate for interstellar detection
“bootstrapped” fitting?
Couldn’t observe internal rotation or quadrupole coupling

32. Voltage Test Voltage Test 04-09-2009_00005SaladBowls_13V.dat 13/15
2:1 ~40 shots
_00006SaladBowls_12V.dat
12/15
2:1 ~20 shots
_00007SaladBowls_11V.dat
11/15
2:1 ~8 shots
_00008SaladBowls_10V.dat
10/15
>= 4:1 ~8 shots
Little Messy
_00009SaladBowls_9V.dat
9/15
<= ~4:1 8 shots
Very Messy
_00010SaladBowls_10_5V.dat
10.5/15
~3: shots
Slightly Messy

33. 2421 Shots
Tuned to 562.2

34. 26724 Shots
Tuned to 562.4

35. 2421 Shots
Tuned to 562.2

36. Another Background 3500 Shots

37. Molecules Trans B-Nitrile
DJ ( 71)E E-03
DJK ( 93)
DK ( 78)
d ( 44)E E-03
d ( 59)E E-06
HJ (113)E E-09
HJK (203)E E-06
HKJ (247)E E-06
HK (170)E E-06
h (147)E E-09
Xaa (196)
Xcc (101)
MICROWAVE AVG = MHz, IR AVG =
MICROWAVE RMS = MHz, IR RMS =

38. Aluminum Rod

39. Marked Plastic Tubing

40. Moved Disturbance Device

41. Side Window View

42. Took Measurement

43. Testing
 Horizontal = 10’’
Vertical = 16’’
Control

44. Inside of Chamber

45. Antenna Orientation

46. Resulting Dead Zones

47. New 5’’ Antenna

48. Stuff To Do Put Salad Bowls in Solid Works
Find Focal Point test for Antenna in old Notebooks
Find Pics of Spectra, go through all spectra
Make visual Appealing Results for Dead Zones
Figure out Internal Rotation
Add Chemical Stuff

49. Lowest Transition (561.29019 MHz)

50. Zoomed In

52. Other Work We’ve looked at Bromo-Benzene Iodo-Benzene Methanol
(Give Pic of Gaussview and Spectrometer Pic and lowest Frequency)
(Mention can only look at molecules in gas phase and volatile liquids)

53. Previous Studies
Give Driezler Chart and finding and site and mention him specifically