Results 151 to 160 of about 888,623 (212)

Saturation of deformation atN=60 in the Sr isotopes

Zeitschrift f�r Physik A Atomic Nuclei, 1990
From the halflife oft 1/2=3.91 (16) ns for the 21 + state in100Sr a deformation parameter ofβ=0.40(1) has been derived. Within the given uncertainties, this value is equal to the recently determinedβ-parameters for98Sr and99Sr, indicating that in the Sr isotopes saturation of deformation is reached immediately at its onset well before neutron midshell.
G. Lhersonneau, H. Gabelmann, N. Kaffrell, K. -L. Kratz, B. Pfeiffer, K. Heyde   +5 more
openaire   +1 more source

A Compilation of Sr and Nd Isotope Data on Mexico

Journal Geological Society of India, 1986
Abstract A compilation is given of the available Sr and Nd isotope data on Mexican volcanic-plutonic terranes which cover about one-third of Mexico's territory. The available data are arranged according to a subdivision of the Mexican territory in terms of geological provinces.
Surendra P. Verma, Mahendra P. Verma
openaire   +1 more source

An isotope generator of Po-210 based on SR resin

Applied Radiation and Isotopes
The work describes an isotope generator of polonium-210 based on an extraction chromatographic resin SR Resin. It was shown that a high selectivity of 4,4'(5')-di-t-butylcyclohexano-18-crown-6, an active component of SR Resin, for lead allows a clear separation of Pb-210 from impurities, easy elution of Po-210 with 5-7 mL of 0.05 M nitric acid solution
Vladimir S, Semenishchev, Elena N, Ishimbaeva, Valeria D, Ermolaeva   +2 more
openaire   +2 more sources

In situ Sr isotopic analysis by laser ablation

Earth and Planetary Science Letters, 1995
We demonstrate that the Sr isotopic compositions of geological materials can be measured in situ through laser ablation using an ICP multiple-collector double focusing magnetic sector mass spectrometer (MC-ICPMS). This provides rapid, texturally sensitive, high precision (0.004%) Sr isotopic analysis without the need for chemical preparation of samples.
John N. Christensen, Alex N. Halliday, Der-Chuen Lee, Chris M. Hall   +3 more
openaire   +1 more source

Unravelling the processes controlling apatite formation in the Phalaborwa Complex (South Africa) based on combined cathodoluminescence, LA-ICPMS and in-situ O and Sr isotope analyses

Contributions to Mineralogy and Petrology, 2020
S. Decrée, Grant Cawthorn, E. Deloule, J. Mercadier, H. Frimmel, J. Baele   +5 more
semanticscholar   +1 more source

Genesis of Sr Isotopes in Groundwater of Hebei Plain

Journal of China University of Geosciences, 2007
Abstract To analyze the genesis of Sr isotopes in groundwater of Hebei plain, time-accumulative effect of 87Sr/86Sr ratio was studied. It is shown that 87Sr/86Sr ratio increases with the increasing age and depth of groundwater and has a positive correlation to 4Heece and a negative correlation to δ18O and δD.
Y PING, Z AIGUO, L CUNFU, C HESHENG, C YIQUN, L XIAOQIAN, J QINSHENG   +6 more
openaire   +1 more source

Sr and Nd isotopic systematics of Shergotty meteorite

Geochimica et Cosmochimica Acta, 1986
Abstract Strontium and neodymium isotopic measurements are reported on mineral separates, whole rock samples, and their leachates and residues of Shergotty meteorite. A very large variation of the Sm Nd ratio in the phosphates of Shergotty is observed. Two sources of Nd are observed which are not mixed completely within Shergotty, resulting in
E Jagoutz, H Wänke
openaire   +1 more source

Determination of Sr Isotopes in Seawater by Mass Spectrometry

Journal of Coastal Research, 2019
ABSTRACT Xu, M., 2018. Determination of Sr isotopes in seawater by mass spectrometry. In: Liu, Z.L. and Mi, C. (eds.), Advances in Sustainable Port and Ocean Engineering. Journal of Coastal Research, Special Issue No. 83, pp. 247–250. Coconut Creek (Florida), ISSN 0749-0208.
openaire   +1 more source

Sr isotope evolution of seawater: the role of tectonics

Earth and Planetary Science Letters, 1992
We use a high-resolution seawater Sr isotopic evolution curve for the last 100 m.y. in conjunction with modern riverine Sr flux measurements, and also geologic, tectonic and geochronological data, to make the case for a close relationship between seawater Sr isotopic composition and the India Asia continental collision.
Frank M. Richter, David B. Rowley, Donald J. DePaolo   +2 more
openaire   +1 more source

Adsorption and Desorption Behaviors of Sr on Montmorillonite: A Triple Sr Isotope Perspective

ACS Earth and Space Chemistry, 2022
Hou-Chun Liu, Jia-You Hsieh, Yen-Hong Chen, Chen-Feng You, Wei-Teh Jiang, Hsin-Yi Wen   +5 more
openaire   +1 more source