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Volumn 105, Issue 9, 2001, Pages 1626-1637

Slowing and speeding molecular beams by means of a rapidly rotating source

Author keywords

[No Author keywords available]

Indexed keywords

DECELERATION; ELECTRIC FIELDS; INERT GASES; KINETIC ENERGY; ROTORS;

EID: 0035281076     PISSN: 10895639     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp002640u     Document Type: Article
Times cited : (109)

References (46)
  • 1
    • 33847594852 scopus 로고
    • Stern, O. Z. Phys. 1920, 2, 49; 3, 417.
    • (1920) Z. Phys. , vol.2 , pp. 49
    • Stern, O.1
  • 2
    • 0003867616 scopus 로고
    • Oxford University Press: New York
    • See: Ramsey, N. F. Molecular Beams; Oxford University Press: New York, 1956; p 21.
    • (1956) Molecular Beams , pp. 21
    • Ramsey, N.F.1
  • 5
    • 0041931442 scopus 로고
    • and references cited therein
    • Moon, P. B. Proc. R. Soc. London A 1978, 360, 303, and references cited therein.
    • (1978) Proc. R. Soc. London A , vol.360 , pp. 303
    • Moon, P.B.1
  • 7
    • 0000601750 scopus 로고    scopus 로고
    • and references cited therein
    • Katz, D. P. J. Chem. Phys. 1997, 107, 8491, and references cited therein.
    • (1997) J. Chem. Phys. , vol.107 , pp. 8491
    • Katz, D.P.1
  • 8
    • 0031075580 scopus 로고    scopus 로고
    • and references cited therein
    • Seideman, T. J. Chem. Phys. 1997, 106, 2881; 107, 10420, and references cited therein.
    • (1997) J. Chem. Phys. , vol.106 , pp. 2881
    • Seideman, T.1
  • 16
    • 0003158036 scopus 로고
    • Scoles, G., Ed.; Oxford University Press: New York
    • Miller, D. R. In Atomic and Molecular Beam Methods, Vol. I.; Scoles, G., Ed.; Oxford University Press: New York, 1988; p 14.
    • (1988) Atomic and Molecular Beam Methods , vol.1 , pp. 14
    • Miller, D.R.1
  • 17
    • 33646080767 scopus 로고    scopus 로고
    • Ph.D. Thesis, Harvard University
    • Gupta, M. Ph.D. Thesis, Harvard University, 2000.
    • (2000)
    • Gupta, M.1
  • 18
    • 0002009421 scopus 로고
    • Scoles, G., Ed.; Oxford University Press: New York
    • Pauly, H. In Atomic and Molecular Beam Methods, Vol. I.; Scoles, G., Ed.; Oxford University Press: New York, 1988; p 83.
    • (1988) Atomic and Molecular Beam Methods , vol.1 , pp. 83
    • Pauly, H.1
  • 20
    • 33646118173 scopus 로고    scopus 로고
    • note
    • ⊥/X, the ratio of the transverse velocity component imparted by the centrifugal force to the flow velocity. Thus, this effect can be disregarded.
  • 21
    • 85088337250 scopus 로고    scopus 로고
    • note
    • min = 1 mK. Swatting therefore becomes inconsequential for molecules directed slightly away from the rotor orbit.
  • 25
    • 33646105807 scopus 로고    scopus 로고
    • note
    • 2.
  • 29
    • 33646092226 scopus 로고    scopus 로고
    • Kluber Lubrication, Londonderry, NH
    • Nonvolatile vacuum grease: Kluber Lubrication, Londonderry, NH.
    • Nonvolatile Vacuum Grease
  • 30
    • 33646081464 scopus 로고    scopus 로고
    • note
    • To prevent the motor from overheating, the manufacturer recommended running water through the housing and around the stator. Due to slight leakage in the internal seals of the motor, this cooling method was not feasible in our vacuum chamber, so we bolted the motor onto a water-cooled copper plate. However, if run too long at high speed, the rotor gradually heats due to friction (with the stationary inlet needle as well as in the spindle's ball bearings). To minimize this, data were taken in batches between "rest periods" in which the rotor was allowed to coast at low speed. The rotor temperature was monitored by observing the TOF spectrum of a Xe beam. To avoid overheating, we operated the motor at ω < 700 rps, much below the rated maximum of 1333 rps. It would be better to circulate a low vapor pressure vacuum oil through the motor housing.
  • 31
    • 33646111860 scopus 로고    scopus 로고
    • PEEK: Scientific Instrument Services Inc., Ringoes, NJ
    • PEEK: Scientific Instrument Services Inc., Ringoes, NJ.
  • 35
    • 33646115389 scopus 로고    scopus 로고
    • note
    • 15 involves complications that may accommodate this broadening. In particular, increases in the seeding mole fraction caused by deviations from equilibrium flow within the rotor or from centrifugal fractionation would be expected to produce higher parallel temperatures for the seeded molecule.
  • 38
    • 33646116969 scopus 로고    scopus 로고
    • Private communication
    • Ye, J. Private communication.
    • Ye, J.1
  • 40
    • 33646086667 scopus 로고    scopus 로고
    • note
    • rot. = 850 m/s); for ISS and MCE it was negligible. Note that, at the low kinetic energies considered here, eq 12 is a crude approximation (omitting glory and orbiting resonance structure, cf. ref 22) but adequate for the rough estimating of attenuation by collisions.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.