메뉴 건너뛰기




Volumn 303, Issue 5656, 2004, Pages 334-338

An Ion Balance for Ultra-High-Precision Atomic Mass Measurements

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC NOISE; CHEMICAL BONDS; MAGNETIC FIELDS; MAGNETRONS; MASS SPECTROMETRY;

EID: 0346373758     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1092320     Document Type: Article
Times cited : (121)

References (35)
  • 16
    • 0346953041 scopus 로고    scopus 로고
    • thesis, Massachusetts Institute of Technology, Cambridge, MA
    • S. Rainville, thesis, Massachusetts Institute of Technology, Cambridge, MA (2003).
    • (2003)
    • Rainville, S.1
  • 17
    • 0346953044 scopus 로고    scopus 로고
    • note
    • 10, and they are known to better than a few percent. For molecules with poorly measured binding energies, mass comparisons can be used to directly weigh the chemical binding energy, as discussed in the text.
  • 19
    • 0346953045 scopus 로고    scopus 로고
    • note
    • -6 if desired.
  • 20
    • 0347584087 scopus 로고    scopus 로고
    • note
    • For phase-sensitive detection of the axial mode, the image currents that each ion's axial motion induces across the trap electrodes are coupled to a dc super-conducting quantum interference device via a super-conducting self-resonant transformer (with a quality factor of about 47,000).
  • 21
    • 0346953042 scopus 로고    scopus 로고
    • thesis, Massachusetts Institute of Technology, Cambridge, MA
    • J. K. Thompson, thesis, Massachusetts Institute of Technology, Cambridge, MA (2003).
    • (2003)
    • Thompson, J.K.1
  • 22
    • 0346323100 scopus 로고    scopus 로고
    • note
    • com increases.
  • 23
    • 0346953040 scopus 로고    scopus 로고
    • note
    • Even if the common mode amplitude is not precisely zeroed, the beating of the two collective modes will lead to time averaging of the radially dependent magnetic field inhomogeneities on a time scale much shorter than the one needed for a typical cyclotron frequency comparison.
  • 25
    • 0346323101 scopus 로고    scopus 로고
    • note
    • -11.
  • 26
    • 0346323099 scopus 로고    scopus 로고
    • note
    • The sign of the originally predicted shift [eq. 4-14 in (15)] was found to be incorrect.
  • 27
    • 0346953043 scopus 로고    scopus 로고
    • note
    • s either in three preliminary data sets using different molecules.
  • 28
    • 0348213788 scopus 로고    scopus 로고
    • note
    • + at the current level of precision, because the ion has zero effective dipole moment in its linear electronic ground state (11, 34).
  • 35
    • 0346953039 scopus 로고    scopus 로고
    • note
    • We acknowledge with gratitude that the experimental and measurement technologies that have made these experiments possible are the result of about 20 years of effort by previous group members, especially the detector technology developed by M. P. Bradley and J. V. Porto. We thank E. G. Myers for many helpful comments on the manuscript. This work was supported by NSF and was formerly supported by the National Institute of Science and Technology and the Joint Services Electronics Program, S.R. acknowledges the support of the Fonds pour la Formation de Chercheur et l'Aide à la Recherche.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.