High resolution laser spectroscopy with minute samples

Greenlees, G.W.; Clark, D. L.; Kaufman, S. L.; Lewis, D. A.; Tonn, J. F.; Broadhurst, J.H.

doi:10.1016/0030-4018(77)90315-7

Cited by 72 publications

(11 citation statements)

References 2 publications

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“…The detection of individual atoms was reported in 1977 by Greenlees and Kaufman at the University of Minnesota [1] and in 1980 by Fairbank and She at Colorado State University [2]. In both cases, an atom beam intersected a CW laser beam.…”

Section: Single-atom Detectionmentioning

confidence: 95%

Single-Molecule Enzymology

Dovic̀hi¹,

Polakowski²,

Skelley³

et al. 2001

Single Molecule Spectroscopy

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Section: Single-atom Detectionmentioning

confidence: 95%

Single-Molecule Enzymology

Dovic̀hi¹,

Polakowski²,

Skelley³

et al. 2001

Single Molecule Spectroscopy

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“…A single atom can also be detected by observing its fluorescence burst in a resonant laser beam [25,26]. By detecting multiple photons in coincidence during the short transit time, both the detector dark counts and the noise photon-counts due to light scattered off walls can be suppressed.…”

Section: Photon-burst Mass Spectrometry (Pbms)mentioning

confidence: 99%

Atom trap trace analysis

Lu¹,

Bailey²,

Chen³

et al. 2001

AIP Conference Proceedings

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A new method of ultrasensitive trace-isotope analysis has been developed based upon the technique of laser manipulation of neutral atoms. It has been used to count individual 85 Kr and 81 Kr atoms present in a natural krypton sample with isotopic abundances in the range of 10-11 and 10-13 , respectively. The atom counts are free of contamination from other isotopes, elements, or molecules. The method is applicable to other trace-isotopes that can be efficiently captured with a magneto-optical trap, and has a broad range of potential applications.

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“…the feasibility of precision atomic-physics measurements with very low intensity beams of atoms, down to single atoms, atomic beam fluxes of 10 atom/sec crossing the laser beam [Greenlees, 1977]. From the optical hyperfine structure, magnetic moments and charge radii may be deduced.…”

Section: Recent Work By Greenlees At the University Of Minnesota Has mentioning

confidence: 99%

ATLAS: a proposal for a precision heavy ion accelerator at Argonne National Laboratory

Bollinger¹

1978

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NOTICEColumn 75 Charging System 75 Voltage Distribution 75Accelerator Tubes 77 Dead Sections 77Terminal Box 77 Vacuum 78b. Injection 78 Ion Sources 78 Low-Energy Beam Line 79Beam Optics 81 c. Improvements in Progress 83Terminal Pumping 83 Power to Terminal 83 Beam Diagnostics 2.3. 4. 5.6. 7.8. 9.10. 11.12. (with the beam from the booster) will be kept to a minimum. T4IOBIUM-COPPER COMPOSITE RF SUPERCONDUCTING MATERIALSUPERCONDUCTINGThe second, new half of the linac will be formed by a simple extension of the designs used in the booster. In particular, (1) Lhe resonators will be fabricated in the same way, (2) the phase-control system will be identical, (3) the computer-based system for controlling the whole linac will exist, (4) flowing liquid belium for cooling will be distributed in the same way, and (5) the modular cryostate will be identical in size so that accelerator sections will be asily interchangeable. Thus, the developmental effort 3 required will be minimal and, indeed, important parts of the detailed engineering design have already been completed.The new portion of the linac will be housed in a shielded tunnel that is large enough to permit complete accelerator sections to be transported into the main linac-assembly area adjacent to the present booster. All assembly will be done off line, and completely tested acceleration sections will be moved on line while still cold. This approach, which is also being used with the booster, is expected to maximize operational efficiency. Note that, because of the flexibility resulting from the use of independently-phased resonators, the linac can continue to operate effectively even when a whole accelerator section is missing.In general terms, the performam.'e of ATLAS can be described as being similar to that of an extremely large tandem ("50 MV) with two strippers:ATLAS has a similar dependence of maximum energy on mass, it has easy energy variability, and it has even better beam quality. The maximum available output energy is summarized in Fig. 2. Normally, the accelerator system would be operated with only two strippers in order to maintain an adequate beam intensity, but the use of a third stripper at the loaction shown in Fig. 1 would provide additional energy for experiments in which some intensity can be sacrificed. Fig. 2 show that the available energy is Thus, the user in Target Area II has a degree of flexibility that considerably mxc gads that of parasitic users of secondary beams at other heavy-ion facilities. density isomers, etc., which may appear when the projectile velocity approaches that required for pion production in the N-N system. Clearly, when two nuclear systems collide with energies much larger than their internal binding energies, the resultant phenomena, interesting thought they may be, are not likely to be sensitive to nuclear structure. The present proposal is aimed squarely at the exploration of heavy-ion interactions in the range of energies in which the connection with nuclear structure is the most direct. The performance curve...

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High resolution laser spectroscopy with minute samples

Cited by 72 publications

References 2 publications

Single-Molecule Enzymology

Single-Molecule Enzymology

Atom trap trace analysis

ATLAS: a proposal for a precision heavy ion accelerator at Argonne National Laboratory

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