Terahertz-visible two-photon rotational spectroscopy of cold OD-

被引：22

作者：

Lee, Seunghyun ^{[1
]}

Hauser, Daniel ^{[1
]}

Lakhmanskaya, Olga ^{[1
]}

Spieler, Steffen ^{[1
]}

Endres, Eric S. ^{[1
]}

Geistlinger, Katharina ^{[1
]}

Kumar, Sunil S. ^{[1
]}

Wester, Roland ^{[1
]}

机构：

[1] Univ Innsbruck, Inst Ionenphys & Angew Phys, Technikerstr 25, A-6020 Innsbruck, Austria

来源：

PHYSICAL REVIEW A | 2016年 / 93卷 / 03期

基金：

欧洲研究理事会;

关键词：

MOLECULAR ION; ASTRONOMICAL IDENTIFICATION; MICROWAVE SPECTROSCOPY; LABORATORY MEASUREMENT; FREQUENCY-MEASUREMENT; TRANSITIONS; SPECTRUM; BAND; COLLISIONS; CLUSTERS;

D O I：

10.1103/PhysRevA.93.032513

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a method to measure rotational transitions of molecular anions in the terahertz domain by sequential two-photon absorption. Ion excitation by bound-bound terahertz absorption is probed by absorption in the visible on a bound-free transition. The visible frequency is tuned to a state-selective photodetachment transition of the excited anions. This provides a terahertz action spectrum for just a few hundred molecular ions. To demonstrate this we measure the two lowest rotational transitions, J = 1 <- 0 and J = 2 <- 1 of OD- anions in a cryogenic 22-pole trap. We obtain rotational transition frequencies of 598 596.08(19) MHz for J = 1 <- 0 and 1 196 791.57(27) MHz for J = 2 <- 1 of OD-, in good agreement with their only previous measurement. This two-photon scheme opens up terahertz rovibrational spectroscopy for a range of molecular anions, in particular for polyatomic and cluster anions.

引用

页数：6

共 64 条

[1] Astronomical identification of CN-, the smallest observed molecular anion [J].

Agundez, M. ;

Cernicharo, J. ;

Guelin, M. ;

Kahane, C. ;

Roueff, E. ;

Klos, J. ;

Aoiz, F. J. ;

Lique, F. ;

Marcelino, N. ;

Goicoechea, J. R. ;

Garcia, M. Gonzalez ;

Gottlieb, C. A. ;

McCarthy, M. C. ;

Thaddeus, P. .

ASTRONOMY & ASTROPHYSICS, 2010, 517

[2] Laboratory measurement of the pure rotational transitions of HCNH+ and its isotopic species [J].

Araki, M ;

Ozeki, H ;

Saito, S .

ASTROPHYSICAL JOURNAL, 1998, 496 (01) :L53-L55

[3] Experimental ground-state combination differences of CH5+ [J].

Asvany, Oskar ;

Yamada, Koichi M. T. ;

Bruenken, Sandra ;

Potapov, Alexey ;

Schlemmer, Stephan .

SCIENCE, 2015, 347 (6228) :1346-1349

[4] COLTRAP: a 22-pole ion trapping machine for spectroscopy at 4 K [J].

Asvany, Oskar ;

Bruenken, Sandra ;

Kluge, Lars ;

Schlemmer, Stephan .

APPLIED PHYSICS B-LASERS AND OPTICS, 2014, 114 (1-2) :203-211

[5] High-resolution rotational spectroscopy in a cold ion trap:: H2D+ and D2H+ [J].

Asvany, Oskar ;

Ricken, Oliver ;

Mueller, Holger S. P. ;

Wiedner, Martina C. ;

Giesen, Thomas F. ;

Schlemmer, Stephan .

PHYSICAL REVIEW LETTERS, 2008, 100 (23)

[6] Detection of a Noble Gas Molecular Ion, 36ArH+, in the Crab Nebula [J].

Barlow, M. J. ;

Swinyard, B. M. ;

Owen, P. J. ;

Cernicharo, J. ;

Gomez, H. L. ;

Ivison, R. J. ;

Krause, O. ;

Lim, T. L. ;

Matsuura, M. ;

Miller, S. ;

Olofsson, G. ;

Polehampton, E. T. .

SCIENCE, 2013, 342 (6164) :1343-1345

[7] ABSOLUTE PHOTODETACHMENT CROSS-SECTION MEASUREMENTS FOR HYDROCARBON CHAIN ANIONS [J].

Best, T. ;

Otto, R. ;

Trippel, S. ;

Hlavenka, P. ;

von Zastrow, A. ;

Eisenbach, S. ;

Jezouin, S. ;

Wester, R. ;

Vigren, E. ;

Hamberg, M. ;

Geppert, W. D. .

ASTROPHYSICAL JOURNAL, 2011, 742 (02)

[8] TUNNELING MOTION IN ARH-3(+) AND ISOTOPOMERS FROM THE ANALYSIS OF THEIR ROTATIONAL SPECTRA [J].

BOGEY, M ;

BOLVIN, H ;

DEMUYNCK, C ;

DESTOMBES, JL ;

VANEIJCK, BP .

JOURNAL OF CHEMICAL PHYSICS, 1988, 88 (07) :4120-4126

[9] LABORATORY MEASUREMENT OF THE MILLIMETER AND SUBMILLIMETER WAVE SPECTRUM OF C2H3+ [J].

BOGEY, M ;

CORDONNIER, M ;

DEMUYNCK, C ;

DESTOMBES, JL .

ASTROPHYSICAL JOURNAL, 1992, 399 (01) :L103-L105

[10] MOLECULAR-STRUCTURE OF HOCO+ [J].

BOGEY, M ;

DEMUYNCK, C ;

DESTOMBES, JL ;

KRUPNOV, A .

JOURNAL OF MOLECULAR STRUCTURE, 1988, 190 :465-474

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