1. ELECTRONIC SPECTROSCOPY of CARBON CHAINS of ASTROPHYSICAL RELEVANCE

2. CHCCCCC Electronic Spectrum ? ? ?

3. PMT Laser beam nozzle valve Gas inlet cavity HV 2  X 2  C 6 H, C 8 H, C 10 H, C 12 H HCCH / Ar

4. CRDS Discharge pulse 30 μs Time 2448024490cm -1

6. Absorbance 0.1 0.0 1.0 0.0 0.5 0.0 0.5 0.0 450500550600 nm C6–C6– HC 6 H + HC 4 CN + C6HC6H Absorption Spectra in 5 K Neon Matrix 2  X 2  C6HC6H

7. nm 526.7 1/2 526.6526.5526.4526.3 3/247/2 5/271/2 3/2  = 3/2  = 1/2 Gas Phase C6HC6H 2  X 2  450500550 Absorption in 5 K Neon Matrix0 0

8. CRDS Discharge pulse 30 μs Time 2448024490cm -1

9. DFWM ω pump ω probe =

10. 1 Λ θ θBθB 2 3 4

11. DFWM signal DFWM laser

12. CRDS DFWM 2448024490cm -1 C4HC4H C3C3 Discharge pulse Discharge pulse Discharge pulse 9 μs 7 μs 30 μs Time < 1 μs Laser

13. 1 Λ θ θBθB 2 3 4

14. TC-RFWM UP SEP ω pump ω probe ω pump ω probe

15. 24200243002440024500 Wavenumber (cm -1 ) 2 Σ + 2 Π 2 Σ + 2 Σ + X 2 Σ + PUMP C4HC4H

17. C 2 H 2 /He C 2 D 2 /He 543544545547546543544545547546 Intensity [a.u.| Wavelength [nm] H. Linnartz, N. Wehres, H. Van Winckel, G.A.H. Walker, D.A. Bohlender, A.G.G.M. Tielens, T. Motylewski and J.P. Maier, Astron. Astrophys, 511, L3, 2010 A DIB Coincidence @λ5450

18. 200300400500600700nm 0.0 0.5 1.0 C C C H H B 1 B 1 X 1 A 1 ~~ A 1 A 2 X 1 A 1 ~~ C 1 A 1 X 1 A 1 ~~ J. A. Hodges, R. J. McMahon, K. W. Sattelmeyer, J. F. Stanton Ap J, 544, 838, 2000

19. 16227 162001621016220162301624016250cm -1 162301623316236cm -1 K a = 1-0 K a = 0-1 K a = 1-0 K a = 2-1 A 1 A 2 X 1 A 1 ~~ C C C H H

20. B 1 A 1 A 2 X 1 A 1 13950 cm -1 16130 cm -1 ~ ~ ~ C C C H H

21. 1A21A2 B2B2 B1B1 B1B1 1A11A1 b 2 16233 b 2 15982 b 1 15813 ≤ 13975 0 a- b- c- 1 B 1 a 2 ~16161 Γ state ΓvΓv A ~ B ~ X ~ ΓvΓv Vibronic interactions Coriolis interactions C C C H H

22. C C C H H H H H H hv 4500500055006000 Wavelength (Å) Absorbance 2020 2 2020 1 2020 3 2020 2 4040 1 2020 1 4040 1 B 1 B 1 X 1 A 1 ~~ 6 K Neon Matrix A 1 A 2 X 1 A 1 ~~ C C C D D C3H2+C3H2+ mass-selection

23. 5430545054705490484048804920 5430545054705490484048804920ÅÅ 2020 1 2020 2 B 1 B 1 X 1 A 1 ~~ l – C 3 H CRD 2020 1 2020 2 C C C D D H H H H

24. 47504800485049004950 Wavelength (Å) Relative Intensity 5 % HD 190603 HD 183143 HD 46711 γ Ori C C C H H

25. Å623562506265615061606170Å K a = 2-1 K a = 1-0 K a = 0-1 5 K 20 K 60 K A 1 A 2 X 1 A 1 ~~ Δλ = 0.15 Å Δλ = 0.4 Å C C C H H

26. 624062506260 Wavelength (Å) Relative Intensity 1 % HD 206267 ζ Oph (x2.5) HD 179406 HD 204827 (÷2) A 1 A 2 X 1 A 1 ~~ 10 K, Δλ = 0.15 Å C C C H H

27. C C C H H B 1 B 1 X 1 A 1 ~~ f ~ 0.016 (theory) N (cm -2 ) = 1.13  10 20 N ( l –C 3 H 2 ) ~ 5  10 14 cm -2 EW (Å) Λ (Å) 2  f towards HD 183143 Franck-Condon factor 2 0 ~ 0.2 total 1 f (2 0 ) ~ 0.003 1

29. Magnetic BenderQuadrupole22-Pole Trap (6 K)HV ElectrodeQuadrupole Ion sourceHexapoleHelium InletLaserPhotomultiplierLenses

30. D 2 Π u B 2 Σ u + A 2 Σ g + C 2 Π u X 2 Π g 33 409 17 363 11 253 9 342 E / cm -1 ~ 33 000 C 2 + + N 2 NCCN +

31. D 2 Π u B 2 Σ u + A 2 Σ g + C 2 Π u X 2 Π g 33 409 17 363 11 253 9 342 E / cm -1 ~ 33 000 C 2 + + N 2 UV NCCN +

32. 750800850900nm NCCN + 0 0 5050 2 4040 2 2020 1 5 0 / 4 0 24 2020 2 1010 1 * * * B 2 Σ u + X 2 Π g 2020 1

33. 887.5888.0888.5889.0nm NCCN + B 2 Σ u + – X 2 Π 3/2,g 0 0

34. NCCN + ~ 890 nm 355 nm NC + + CN ps C 2 Π u B 2 Σ u + A 2 Σ g + X 2 Π g ~ 2000 cm -1

35. 840860880900920nm HCCCCCCCCCCCCH + 0 0 A 2  u X 2  g 1200 16141210864 1000 800 600 400 n nm

36. B 2 Π g A 2 Π g C 2 Π g X 2 Π u 3 2 1 0 E/eV HC 10 H + C 7 H 2 + + C 3 C 7 H + + C 3 H

37. B 2 Π g A 2 Π g C 2 Π g X 2 Π u 3 2 1 0 E/eV HC 10 H + C 7 H 2 + + C 3 C 7 H + + C 3 H

38. 17656176601766417668154601546415468ν/cm -1 176101864018660ν/cm -1 1764017670177001773018620 HC8H+HC8H+ B 2 Π u X 2 Π g0 0 HC 10 H + B 2 Π g X 2 Π u0 0 HC 10 H + C 2 Π g X 2 Π u0 0 HC 12 H + D 2 Π u X 2 Π g0 0 ~ ~

39. 480485490495500505nm 50 100 150 200 250 300 350 400 C 4 H + counts 0 0 HC4H+HC4H+ A 2 Π u X 2 Π g ~~ 35 30 25 20 15 10 5 0 507.1506.7506.9506.7506.9nm Simulation ~ 20 K; 0.4 cm -1

40. 5066506850705072Å 5068.8 Å DIB 10 K 60 K 0 0 HC4H+HC4H+ A 2 Π u X 2 Π g ~~ J. Krelowski et al., Ap. J., 714, L64, 2010

41. A 2 Π 3/2 v 3 = 1 A 2 Π 1/2 v = 0 A 2 Π 3/2 v = 0 X 2 Π 1/2 v = 0 X 2 Π 3/2 v = 0 ~ 800 cm -1 31.1 cm -1 33.3 cm -1 Magnetic dipole rate ~10 -6 s -1 R 1 max ~5067.9 Å H C C C C H +

42. A 2 Π u X 2 Π g ~~ H C C C C H + 5055506050705075 Wavelength (Å) 30 K 60 K 30 K 50655080 2 Π 3/2 and 2 Π 1/2 2 Π 3/2 T rot = T s-o DIB‘s 2 Π 3/2 2 Π 1/2 ~ 33 cm -1 Magnetic dipole 0 0

43. M.D. Morse & J.P. Maier, Ap J, 731, 1, 2011

44. Dr. Rainer DIETSCHE PD Dr. Jan FULARA Dr. Fabio MAZZOTTI Dr. Corey RICE Satrajit CHAKRABARTY Iryna GARKUSHA Adam NAGY Ranjini RAGHUNANDAN

46. M.D. Morse & J.P. Maier, Ap J, 731, 1, 2011

47. M.D. Morse & J.P. Maier, Ap J, 731, 1, 2011