Search Results - "LEWEN, F"

Rotation-tunnelling spectrum and astrochemical modelling of dimethylamine, CH3NHCH3, and searches for it in space by Müller, H S P, Garrod, R T, Belloche, A, Rivilla, V M, Menten, K M, Jiménez-Serra, I, Martín-Pintado, J, Lewen, F, Schlemmer, S

“…ABSTRACT Methylamine has been the only simple alkylamine detected in the interstellar medium for a long time. With the recent secure and tentative detections…”
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Application of superlattice multipliers for high-resolution terahertz spectroscopy by Endres, C P, Lewen, F, Giesen, T F, Schlemmer, S, Paveliev, D G, Koschurinov, Y I, Ustinov, V M, Zhucov, A E

“…Frequency multipliers based on superlattice (SL) devices as nonlinear elements have been developed as radiation sources for a terahertz (THz) laboratory…”
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Transmission characteristics of dichroic filters measured by THz time-domain spectroscopy by WINNEWISSER, C, LEWEN, F, HELM, H

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Ultra-narrow-linewidth continuous-wave THz sources based on multiplier chains by Schiller, S., Roth, B., Lewen, F., Ricken, O., Wiedner, M. C.

“…We demonstrate two different sources at 1.3 THz based on multiplier chains (72nd harmonic generation), which exhibit linewidths at the level of 2×10 −12 in…”
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Millimeter wave and terahertz spectra and global fit of torsion–rotation transitions in the ground, first and second excited torsional states of 13 CH 3 OH methanol by Xu, Li-Hong, Lees, R.M., Hao, Yun, Müller, H.S.P., Endres, C.P., Lewen, F., Schlemmer, S., Menten, K.M.

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Compact 1.9 THz BWO local-oscillator for the GREAT heterodyne receiver by Philipp, M., Graf, U.U., Wagner-Gentner, A., Rabanus, D., Lewen, F.

“…The 1.9THz local-oscillator (LO) of the GREAT heterodyne receiver is presented. The LO is based on a frequency tripled backward-wave oscillator source. The…”
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Interstellar Detection of CCC and High-Precision Laboratory Measurements near 2 THz by Giesen, T. F, Van Orden, A. O, Cruzan, J. D, Provencal, R. A, Saykally, R. J, Gendriesch, R, Lewen, F, Winnewisser, G

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Precision Broadband Spectroscopy near 2 THz: Frequency-Stabilized Laser Sideband Spectrometer with Backward-Wave Oscillators by Gendriesch, R., Lewen, F., Winnewisser, G., Hahn, J.

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Sub-Doppler and Doppler spectroscopy of DCN isotopomers in the terahertz region: ground and first excited bending states ( v1v2v3)=(0 1 e, f 0) by Brünken, S., Fuchs, U., Lewen, F., Urban, Š., Giesen, T., Winnewisser, G.

“…The rotational spectra of the deuterium cyanide isotopic species DCN, D 13CN, DC 15N, and D 13C 15N were recorded in the vibrational ground and first excited…”
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Pure rotational spectroscopy of potassium chloride, KCl, up to 930GHz and isotopically invariant analysis of KCl and NaCl by Caris, M., Lewen, F., Müller, H.S.P., Winnewisser, G.

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Pure Rotational Spectrum of HCN in the Terahertz Region: Use of a New Planar Schottky Diode Multiplier by Maiwald, F., Lewen, F., Ahrens, V., Beaky, M., Gendriesch, R., Koroliev, A.N., Negirev, A.A., Paveljev, D.G., Vowinkel, B., Winnewisser, G.

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The CO dimer: new light on a mysterious molecule by Surin, L.A., Fourzikov, D.N., Lewen, F., Dumesh, B.S., Winnewisser, G., McKellar, A.R.W.

“…The present state of research on the CO dimer is reviewed. In recent years, both infrared and millimeter-wave spectra have been measured and partially assigned…”
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Pure Rotational Spectroscopy of Sodium Chloride, NaCl, up to 930 GHz by Caris, M., Lewen, F., Winnewisser, G.

“…The pure rotational spectra of both isotopomers of NaCl, i. e. Na Cl and Na Cl, have been recorded in high resolution with the Cologne terahertz spectrometer…”
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High-resolution terahertz spectrum of CH2 — Low J rotational transitions near 2 THz by Brünken, S, Michael, E A, Lewen, F, Giesen, Th, Ozeki, H, Winnewisser, G, Jensen, P, Herbst, E

“…The methylene radical (CH 2 ) was very important to Gerhard Herzberg. We have carried out high-resolution spectroscopic measurements on two energetically…”
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Submillimeter-wave spectroscopy of HCN in excited vibrational states by Zelinger, Z., Amano, T., Ahrens, V., Brünken, S., Lewen, F., Müller, H.S.P., Winnewisser, G.

“…Measurements of the rotational spectrum of HCN in excited vibrational states have been extended to higher-J values. The transitions reach J=8←7 around 710 GHz…”
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Rotational spectroscopy of isotopic oxirane, c-C2H4O by Müller, Holger S.P., Guillemin, Jean-Claude, Lewen, Frank, Schlemmer, Stephan

“…We studied the rotational spectrum of oxirane in a sample of natural isotopic composition in selected regions between 158 GHz and 1093 GHz. Investigations of…”
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A Concise New Look at the [CLC][ITAL]l[/ITAL][/CLC]-Type Spectrum of H[TSUP]12[/TSUP]C[TSUP]14[/TSUP]N by Thorwirth, S., Müller, H. S. P., Lewen, F., Brünken, S., Ahrens, V., Winnewisser, G.

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The Ground State Spectroscopic Parameters and Equilibrium Structure of PD3 by Canè, E., Fusina, L., Bürger, H., Jerzembeck, W., Brünken, S., Lewen, F., Winnewisser, G.

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The Phosphidogen Radical, PH2: Terahertz Spectrum and Detectability in Space by Margulès, L., Herbst, E., Ahrens, V., Lewen, F., Winnewisser, G., Müller, H.S.P.

“…Pure rotational transitions of phosphidogen, PH2, in its ground electronic (X̃2B1) and ground vibrational states have been observed with the Cologne terahertz…”
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Millimeter-wave spectroscopy of the 13CH3OD isotopic species of methyl alcohol by Xu, Li-Hong, Lees, R.M., Zakharenko, O., Müller, H.S.P., Lewen, F., Schlemmer, S., Menten, K.M.

“…[Display omitted] •MMW spectrum of 13CH3OD methanol isotopologue studied from 150 to 510 GHz.•qRK(J) a-type multiplets and b-type rQ and pQ branches assigned…”
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