Determination of mass-dependent variations in nickel isotope compositions using double spiking and MC-ICPMS

2012 ◽  
Vol 27 (1) ◽  
pp. 137-145 ◽  
Author(s):  
Louise Gall ◽  
Helen Williams ◽  
Christopher Siebert ◽  
Alex Halliday
Keyword(s):  
Nickel Isotope ◽  
Mass Dependent

scholarly journals A perturbative determination of mass dependent improvement coefficients in a relativistic heavy quark action

2004 ◽  
Vol 697 (1-2) ◽  
pp. 271-301 ◽  
Author(s):  
Sinya Aoki ◽  
Yasuhisa Kayaba ◽  
Yoshinobu Kuramashi
Keyword(s):  
Heavy Quark ◽  
Mass Dependent

Determination of mass-dependent molybdenum isotopic variations by MC-ICP-MS: An evaluation of matrix effects

2006 ◽  
Vol 225 (1-2) ◽  
pp. 121-136 ◽  
Author(s):  
Aaron J. Pietruszka ◽  
Richard J. Walker ◽  
Philip A. Candela
Keyword(s):  
Matrix Effects ◽  
Icp Ms ◽  
Mass Dependent ◽  
Isotopic Variations

Determination of 88Sr/86Sr mass-dependent isotopic fractionation and radiogenic isotope variation of 87Sr/86Sr in the Neoproterozoic Doushantuo Formation

2008 ◽  
Vol 14 (1-2) ◽  
pp. 126-133 ◽  
Author(s):  
Takeshi Ohno ◽  
Tsuyoshi Komiya ◽  
Yuichiro Ueno ◽  
Takafumi Hirata ◽  
Shigenori Maruyama
Keyword(s):  
Isotopic Fractionation ◽  
Doushantuo Formation ◽  
Radiogenic Isotope ◽  
Mass Dependent ◽  
Isotope Variation

scholarly journals Lithium abundance as a boundary condition for age and mass determination of solar twin stars

2009 ◽  
Vol 5 (S265) ◽  
pp. 422-423
Author(s):  
M. Castro ◽  
J.-D. do Nascimento ◽  
J. S. da Costa ◽  
J. Meléndez ◽  
M. Bazot ◽  
...  
Keyword(s):  
Evolutionary Model ◽  
Lithium Abundance ◽  
History Of ◽  
Standard Models ◽  
Stellar Masses ◽  
Mass Dependent ◽  
Best Fit ◽  
Li Content ◽  
Better Than

AbstractWe explore the non-standard mixing history of five solar twins to determine as precisely as possible their mass and age. For this, we computed a grid of evolutionary models with non-standard mixing at given metallicities with the Toulouse-Geneva code for a range of stellar masses. We choose the evolutionary model that best fit the low lithium abundances observed in the solar twins. Our best model for each solar twin provides a mass and age solution constrained by their Li content and Teff determination. Li depletion due to the additional mixing in solar-twins is strongly mass dependent. An accurate lithium abundance measurement connected with non-standard models provides a more precise information about the age and mass better than that determined only by classical methods.

scholarly journals Non-perturbative determination of improvement b-coefficients in Nf = 3

2018 ◽  
Vol 175 ◽  
pp. 10008 ◽  
Author(s):  
Giulia Maria de Divitiis ◽  
Maurizio Firrotta ◽  
Jochen Heitger ◽  
Carl Christian Köster ◽  
Anastassios Vladikas
Keyword(s):  
Boundary Conditions ◽  
Lattice Qcd ◽  
Tree Level ◽  
Gauge Action ◽  
The Past ◽  
Functional Boundary ◽  
Functional Boundary Conditions ◽  
Mass Dependent ◽  
B Coefficients

We present our preliminary results of the non-perturbative determination of the valence mass dependent coefficients bA - bP and bm as well as the ratio ZPZm=ZA entering the flavour non-singlet PCAC relation in lattice QCD with Nf = 3 dynamical flavours. We apply the method proposed in the past for quenched approximation and Nf = 2 cases, employing a set of finite-volume ALPHA configurations with Schrödinger functional boundary conditions, generated with O(a) improved Wilson fermions and the tree-level Symanzik-improved gauge action for a range of couplings relevant for simulations at lattice spacings of about 0.09 fm and below.

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