Precise atomic mass measurements by deflection mass spectrometry

2003 ◽  
Vol 204 ◽  
pp. 460-465 ◽  
Author(s):  
R.C. Barber ◽  
K.S. Sharma
Keyword(s):  
Mass Spectrometry ◽  
Atomic Mass ◽  
Mass Measurements

LARGE-SCALE MASS MEASUREMENTS OF SHORT-LIVED NUCLIDES WITH THE ISOCHRONOUS MASS SPECTROMETRY AT GSI

2009 ◽  
Vol 18 (02) ◽  
pp. 346-351 ◽  
Author(s):  
B. SUN ◽  
R. KNÖBEL ◽  
YU. A. LITVINOV ◽  
S. NAKAJIMA ◽  
H. GEISSEL ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Structure ◽  
Large Scale ◽  
Penning Trap ◽  
Atomic Mass ◽  
Nuclear Mass ◽  
Mass Measurements ◽  
Isochronous Mass Spectrometry ◽  
R Process ◽  
Measured Mass

Precise mass measurements of short-lived exotic nuclei are very important for the understanding of basic nuclear structure physics and astrophysical nucleosynthesis in nature, as well as for the test and the development of theoretical nuclear mass models. At GSI, the Isochronous Mass Spectrometry (IMS) dedicated to mass measurements of short-lived nuclides was developed. In this contribution, the IMS technique is briefly reviewed. Recently, the first large-scale measurement on the 238 U fission fragment was done successfully. The measured mass values are in excellent agreement with the recent Penning trap data, however, they show a systematical deviation from the values in the latest atomic mass evaluation. Some representative results from this experiment will be presented, including their impact on nuclear structure physics and astrophysical r-process nucleosynthesis.

Atomic spectrometry update. Atomic mass spectrometry

2006 ◽  
Vol 21 (8) ◽  
pp. 785 ◽  
Author(s):  
Jeffrey R. Bacon ◽  
Kathryn L. Linge ◽  
Randall R. Parrish ◽  
Luc Van Vaeck
Keyword(s):  
Mass Spectrometry ◽  
Atomic Mass ◽  
Atomic Spectrometry ◽  
Atomic Mass Spectrometry

Dry Ashing Preparation of (Quasi)solid Samples for the Determination of Inorganic Elements by Atomic/Mass Spectrometry

2015 ◽  
Vol 50 (4) ◽  
pp. 304-331 ◽  
Author(s):  
Kun Shen ◽  
Ni Zhang ◽  
Xiaoming Yang ◽  
Zhongxi Li ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Atomic Mass ◽  
Inorganic Elements ◽  
Solid Samples ◽  
Dry Ashing ◽  
Atomic Mass Spectrometry

Differentiation of the Isomeric o-(m- and p-) Nitro-(Chloro- and Bromo-)Benzyl-2,4-(and 2,1-) Disubstituted 2-Thiocytosinium Halides by Electron Impact Ionisation and Fast Atom Bombardment Mass Spectrometry

2009 ◽  
Vol 15 (4) ◽  
pp. 497-506 ◽  
Author(s):  
Tomasz Pospieszny ◽  
Elżbieta Wyrzykiewicz
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectra ◽  
Fast Atom Bombardment ◽  
Collision Induced Dissociation ◽  
Mass Measurements ◽  
Fragmentation Pathways ◽  
Mass Spectral ◽  
Fragment Ions ◽  
Accurate Mass Measurements ◽  
Impact Ionisation

Electron ionisation (EI) and fast atom bombardment (FAB) mass spectral fragmentations of nine 2,4-(and 2,1-) disubstituted o-( m- and p-)nitro-(chloro- and bromo-)-2-thiocytosinium halides are investigated. Fragmentation pathways, whose elucidation is assisted by accurate mass measurements and metastable transitions [EI-mass spectrometry (MS)], as well as FAB/collision-induced dissociation (CID) mass spectra measurements are discussed. The correlations between the abundances of the (C11H10N4SO2)+1–3; (C11H10N3SCl)+4–6 and (C11H10N3SBr)+7–9 ions and the selected fragment ions (EI-MS), as well as (C18H16N5SO4)+1–3; (C18H16N3SCl2)+4–6 and (C18H16N3SBr2) + 7–9 ions and the selected ions (C7H6NO2)+1–3; (C7H6Cl)+ 4–6; (C7H6Br)+ 7–9 (FAB-MS) are discussed. The data obtained can be used for distinguishing isomers.

Atomic Spectrometry Update. Atomic mass spectrometry

2001 ◽  
Vol 16 (6) ◽  
pp. 879 ◽  
Author(s):  
Jeffrey R. Bacon ◽  
Jeffrey S. Crain ◽  
Luc Van Vaeck ◽  
John G. Williams
Keyword(s):  
Mass Spectrometry ◽  
Atomic Mass ◽  
Atomic Spectrometry ◽  
Atomic Mass Spectrometry
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