Precise atomic mass differences amongst isotopes of Hg, Tl, Pb, and Bi (and a least-squares mass evaluation for 78 ≤ Z ≤ 84)

1985 ◽  
Vol 63 (7) ◽  
pp. 966-972 ◽  
Author(s):  
V. P. Derenchuk ◽  
R. J. Ellis ◽  
K. S. Sharma ◽  
R. C. Barber ◽  
H. E. Duckworth
Keyword(s):  
High Resolution ◽  
Least Squares ◽  
Mass Spectrometer ◽  
Atomic Mass ◽  
Mass Spectral ◽  
Least Squares Adjustment ◽  
University Of Manitoba ◽  
The University ◽  
High Resolution Mass Spectrometer ◽  
Resolution Mass

The 1.00-m radius, high resolution mass spectrometer at the University of Manitoba has been used to determine the spacings of a series of mass spectral doublets. These give improved values for the mass differences between the stable nuclides in Tl, Pb, and Bi and relate these values to previous atomic masses and mass differences for the isotopes of Hg. A least-squares adjustment has been performed on all available atomic mass data (including the mass spectroscopic results from this laboratory) for the region 78 ≤ Z ≤ 84.

Precise atomic masses for titanium

1979 ◽  
Vol 57 (2) ◽  
pp. 266-270 ◽  
Author(s):  
K. S. Kozier ◽  
K. S. Sharma ◽  
R. C. Barber ◽  
J. W. Barnard ◽  
R. J. Ellis ◽  
...  
Keyword(s):  
High Resolution ◽  
Mass Spectrometer ◽  
Atomic Mass ◽  
Atomic Masses ◽  
Mass Data ◽  
High Resolution Mass ◽  
University Of Manitoba ◽  
The University ◽  
High Resolution Mass Spectrometer ◽  
Resolution Mass

The 1.00 m radius high resolution mass spectrometer at the University of Manitoba ('Manitoba II') has been used to determine the atomic masses of 47Ti and 48Ti. These data are somewhat superior in precision to existing values and improve the reliability of atomic mass data in that region of the mass table.

Precise atomic masses and mass differences for mercury

1980 ◽  
Vol 58 (9) ◽  
pp. 1311-1316 ◽  
Author(s):  
K. S. Kozier ◽  
K. S. Sharma ◽  
R. C. Barber ◽  
J. W. Barnard ◽  
R. J. Ellis ◽  
...  
Keyword(s):  
High Resolution ◽  
Excellent Agreement ◽  
Mass Difference ◽  
Atomic Mass ◽  
Atomic Masses ◽  
Naturally Occurring ◽  
University Of Manitoba ◽  
The University ◽  
High Resolution Mass Spectrometer ◽  
Resolution Mass

The 1.00 m radius high resolution mass spectrometer at the University of Manitoba ("Manitoba II") has been used to determine both atomic masses and atomic mass differences for all the naturally occurring isotopes of Hg with a precision superior to existing values. The mass difference data are in excellent agreement with recently tabulated values, while the atomic masses themselves differ significantly.

Precise Atomic-Mass Differences in the Region

1972 ◽  
Vol 50 (1) ◽  
pp. 34-41 ◽  
Author(s):  
R. C. Barber ◽  
R. L. Bishop ◽  
J. O. Meredith ◽  
F. C. G. Southon ◽  
P. Williams ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Resolution ◽  
Mass Spectrometer ◽  
Atomic Mass ◽  
Mass Spectral ◽  
Naturally Occurring ◽  
High Resolution Mass ◽  
High Resolution Mass Spectrometer ◽  
Resolution Mass ◽  
The Rare Earth

A high-resolution mass spectrometer has been used to determine precise atomic-mass differences for 31 mass spectral doublets amongst the rare-earth chlorides. The precision of these determinations is in the range 0.6 μu to 3.8 μu, i.e. (2.5 to 25) × 10−9. The new data, when combined with previous data from this laboratory and with the known 37Cl–35Cl difference, provide mass-spectroscopically-derived connections between all naturally occurring odd-A nuclides from 141Pr to 169Tm and between all even-A nuclides from 142Nd to 170Er.

Precise Atomic Mass Differences for

1974 ◽  
Vol 52 (23) ◽  
pp. 2386-2394 ◽  
Author(s):  
R. C. Barber ◽  
J. W. Barnard ◽  
D. A. Burrell ◽  
J. O. Meredith ◽  
F. C. G. Southon ◽  
...  
Keyword(s):  
High Resolution ◽  
Nuclear Reaction ◽  
Mass Spectrometer ◽  
Atomic Mass ◽  
Computer Assisted ◽  
Naturally Occurring ◽  
High Resolution Mass ◽  
High Resolution Mass Spectrometer ◽  
Q Values ◽  
Resolution Mass

A high resolution mass spectrometer has been used to determine new values for 16 atomic mass differences involving naturally occurring isotopes for [Formula: see text]. These new determinations, which were derived by means of a computer assisted peak matching system, have a precision ranging from 0.6 to 2.0 μu (0.6 to 1.8 keV) and thus are generally more precise than the corresponding nuclear reaction or decay Q values available in the region.

A High Resolution Mass Spectrometer for Atomic Mass Determinations

1971 ◽  
Vol 42 (1) ◽  
pp. 1-8 ◽  
Author(s):  
R. C. Barber ◽  
R. L. Bishop ◽  
H. E. Duckworth ◽  
J. O. Meredith ◽  
F. C. G. Southon ◽  
...  
Keyword(s):  
High Resolution ◽  
Mass Spectrometer ◽  
Atomic Mass ◽  
High Resolution Mass ◽  
High Resolution Mass Spectrometer ◽  
Resolution Mass

Precise atomic mass differences for wide doublets as determined with the Manitoba II mass spectrometer

1977 ◽  
Vol 55 (5) ◽  
pp. 383-389 ◽  
Author(s):  
F. C. G. Southon ◽  
J. O. Meredith ◽  
R. C. Barber ◽  
H. E. Duckworth
Keyword(s):  
Rare Earth ◽  
Mass Spectrometer ◽  
Mass Difference ◽  
Large Body ◽  
Atomic Mass ◽  
Mass Spectral ◽  
Systematic Correction ◽  
University Of Manitoba ◽  
Double Focusing ◽  
The University

In work reported previously, the 1 m radius, second-order, double-focusing mass spectrometer at the University of Manitoba ('Manitoba II') has been used to determine the spacing, ΔM, of relatively narrow mass spectral doublets (1/115 000 < ΔM/M < 1/17 000). In this work, involving relatively much wider doublets, we describe a systematic correction which must be applied to such determinations. We also report new values for the 37Cl – 35Cl mass difference and for two rare earth doublets which check the reliability of a large body of previous data.

High-resolution mass spectrometer for protein chemistry

Nature ◽  
1994 ◽  
Vol 370 (6488) ◽  
pp. 393-395 ◽  
Author(s):  
Yunzhi Li ◽  
Richard L. Hunter ◽  
Robert T. Mclver
Keyword(s):  
High Resolution ◽  
Mass Spectrometer ◽  
Protein Chemistry ◽  
High Resolution Mass ◽  
High Resolution Mass Spectrometer ◽  
Resolution Mass
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