High-precision spectroscopy of the HD+ molecule at the 1-p.p.b. level

被引：18

作者：

Biesheuvel, J. ^{[1
,4
]}

Karr, J. -Ph. ^{[2
,3
]}

Hilico, L. ^{[2
,3
]}

Eikema, K. S. E. ^{[1
]}

Ubachs, W. ^{[1
]}

Koelemeij, J. C. J. ^{[1
]}

机构：

[1] Vrije Univ, Dept Phys & Astron, LaserLaB, De Boelelaan 1081, NL-1081 HV Amsterdam, Netherlands

[2] UPMC Sorbonne Univ, ENS PSL Res Univ, Coll France, Lab Kastler Brossel,CNRS, 4 Pl Jussieu, F-75005 Paris, France

[3] Univ Evry Val dEssonne, Dept Phys, Blvd Francois Mitterrand, F-91025 Evry, France

[4] Stat Netherlands CBS, POB 24500, NL-2490 HA The Hague, Netherlands

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2017年 / 123卷 / 01期

关键词：

INFRARED-SPECTRUM; IONS; VALUES; H-3+;

D O I：

10.1007/s00340-016-6576-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recently we reported a high-precision optical frequency measurement of the (nu, L): (0, 2) -> (8, 3) vibrational overtone transition in trapped deuterated molecular hydrogen (HD+) ions at 10 mK temperature. Achieving a resolution of 0.85 parts-per-billion (p.p.b.), we found the experimental value [nu(0) = 383, 407, 177.38 (41) MHz] to be in agreement with the value from molecular theory [nu th 383, 407, 177.150 (15) MHz] within 0.6 (1.1) p.p.b. (Biesheuvel et al. in Nat Commun 7: 10385, 2016). This enabled an improved test of molecular theory (including QED), new constraints on the size of possible effects due to 'new physics,' and the first determination of the proton-electron mass ratio from a molecule. Here, we provide the details of the experimental procedure, spectral analysis, and the assessment of systematic frequency shifts. Our analysis focuses in particular on deviations of the HD+ velocity distribution from thermal (Gaussian) distributions under the influence of collisions with fast ions produced during (laser-induced) chemical reactions, as such deviations turn out to significantly shift the hyperfine-less vibrational frequency as inferred from the saturated and Doppler-broadened spectrum, which contains partly unresolved hyperfine structure.

引用

页数：22

共 43 条

[11] Frequency Comparison of Two High-Accuracy Al+ Optical Clocks [J].

Chou, C. W. ;

Hume, D. B. ;

Koelemeij, J. C. J. ;

Wineland, D. J. ;

Rosenband, T. .

PHYSICAL REVIEW LETTERS, 2010, 104 (07)

[12] Laser cooling of beryllium ions using a frequency-doubled 626 nm diode laser [J].

Cozijn, F. M. J. ;

Biesheuvel, J. ;

Flores, A. S. ;

Ubachs, W. ;

Blume, G. ;

Wicht, A. ;

Paschke, K. ;

Erbert, G. ;

Koelemeij, J. C. J. .

OPTICS LETTERS, 2013, 38 (13) :2370-2372

[13] Adiabatic formulation of heteronuclear hydrogen molecular ion [J].

Esry, BD ;

Sadeghpour, HR .

PHYSICAL REVIEW A, 1999, 60 (05) :3604-3617

[14] A STUDY OF THE REACTIONS OF H-3+, H2D+, HD2+, AND D3+ WITH H-2, HD, AND D2 USING A VARIABLE-TEMPERATURE SELECTED ION FLOW TUBE [J].

GILES, K ;

ADAMS, NG ;

SMITH, D .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (19) :7645-7650

[15] The fundamental rotational interval of para-H2+ by MQDT-assisted Rydberg spectroscopy of H2 [J].

Haase, Christa ;

Beyer, Maximilian ;

Jungen, Christian ;

Merkt, Frederic .

JOURNAL OF CHEMICAL PHYSICS, 2015, 142 (06)

[16]

Hasted J.B., 1964, PHYS ATOM COLLISIONS

[17] Solving non-Born-Oppenheimer Schrodinger equation for hydrogen molecular ion and its isotopomers using the free complement method [J].

Hijikata, Yuh ;

Nakashima, Hiroyuki ;

Nakatsuji, Hiroshi .

JOURNAL OF CHEMICAL PHYSICS, 2009, 130 (02)

[18] EINSTEIN COEFFICIENTS, CROSS-SECTIONS, F VALUES, DIPOLE-MOMENTS, AND ALL THAT [J].

HILBORN, RC .

AMERICAN JOURNAL OF PHYSICS, 1982, 50 (11) :982-986

[19] Hydrogen molecular ions for improved determination of fundamental constants [J].

Karr, J. -Ph. ;

Hilico, L. ;

Koelemeij, J. C. J. ;

Korobov, V. I. .

PHYSICAL REVIEW A, 2016, 94 (05)

[20] H2+ and HD+: Candidates for a molecular clock [J].

Karr, J. -Ph. .

JOURNAL OF MOLECULAR SPECTROSCOPY, 2014, 300 :37-43

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