Isotopes and Atomic Weights

Aston, F. W.

doi:10.1038/105617a0

Cited by 63 publications

(33 citation statements)

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“…Aston used a mass spectrograph to identify two isotopes of mercury: ''Further examination of the multiply charged mercury clusters indicate the probability of a strong line at 202, a weak component at 204.'' Aston published the actual spectra a few months later [79]. 203 Hg 203 Hg was first identified by Friedlander et al in 1943 and reported in ''Radioactive isotopes of mercury'' [80].…”

Section: Hgmentioning

confidence: 99%

Discovery of scandium, titanium, mercury, and einsteinium isotopes

Meierfrankenfeld

Bury

Thoennessen

2011

Atomic Data and Nuclear Data Tables

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Section: Hgmentioning

confidence: 99%

Discovery of scandium, titanium, mercury, and einsteinium isotopes

Meierfrankenfeld

Bury

Thoennessen

2011

Atomic Data and Nuclear Data Tables

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“…I hope that, in this historical sketch, I have not deviated too far from the truth. 2 Or 'kanalstrahlen', the stream of positive ions formed from residual gases in cathode ray tubes.…”

Section: The History Of Nuclear Massesmentioning

confidence: 99%

The history of nuclidic masses and of their evaluation

Audi

2006

International Journal of Mass Spectrometry

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This paper is centered on some historical aspects of nuclear masses, and their relations to major discoveries. Besides nuclear reactions and decays, the heart of mass measurements lies in mass spectrometry, the early history of which will be reviewed first. I shall then give a short history of the mass unit which has not always been defined as one twelfth of the carbon-12 mass. When combining inertial masses from mass spectrometry with energy differences obtained in reactions and decays, the conversion factor between the two is essential. The history of the evaluation of the nuclear masses (actually atomic masses) is only slightly younger than that of the mass measurements themselves. In their modern form, mass evaluations can be traced back to 1955. Prior to 1955, several tables were established, the oldest one in 1935.

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“…Of the various types of mass spectrometers, only those designs utilizing magnetic sector technology have been successful in the simultaneous detection [3,4] of spatially resolved ions of different masses. Imaging based simultaneous detection offers unique advantages over other time or frequency domain mass spectrometers such as time-of-fight mass (TOFMS), ion trap mass (ITMS), and Fourier transform ion cyclotron resonance mass spectrometers (FT-ICRMS).…”

Section: Introductionmentioning

confidence: 99%

“…However, one disadvantage of this arrangement is the location of the detector system, in that it must be located at the plane of focus at the magnet exit. Detector technology development has thus played a crucial role in efforts to adapt this multiplexing ion detection capability since the photographic plate was first incorporated by Thomson [3] and Aston [4] in the earliest days of the history of mass spectrometry. More recently, various types of array detectors such as microchannel plate detector arrays, multiplecollector detector arrays, and integrated array systems have been successfully applied with mass spectrometry for the simultaneous detection of multiple ions of different mass-to-charge (m/z) values [5,7,8].…”

Section: Introductionmentioning

confidence: 99%