Results 81 to 90 of about 37,662 (245)

Barium isotopic composition of mainstream silicon carbides from Murchison : constraints for s-process nucleosynthesis in asymptotic giant branch stars [PDF]

open access: yes, 2014
We present barium, carbon, and silicon isotopic compositions of 38 acid-cleaned presolar SiC grains from Murchison. Comparison with previous data shows that acid washing is highly effective in removing barium contamination.
Bisterzo, Sara   +15 more
core   +2 more sources

Spectroscopy of $^{87}\text{Sr}$ triplet Rydberg states

open access: yes, 2018
A combined experimental and theoretical spectroscopic study of high-$n$, ${30 \lesssim n \lesssim 100}$, triplet $\text{S}$ and $\text{D}$ Rydberg states in $^{87}\text{Sr}$ is presented. $^{87}\text{Sr}$ has a large nuclear spin, ${I=9/2}$, and at high-$
Burgdörfer, J.   +6 more
core   +2 more sources

Formation of ultracold SrYb molecules in an optical lattice by photoassociation spectroscopy: theoretical prospects

open access: yes, 2011
State-of-the-art {\em ab initio} techniques have been applied to compute the potential energy curves for the SrYb molecule in the Born-Oppenheimer approximation for the ground state and first fifteen excited singlet and triplet states within the coupled ...
Amiot   +80 more
core   +1 more source

Development of a strontium optical lattice clock for the SOC mission on the ISS [PDF]

open access: yes, 2016
The ESA mission "Space Optical Clock" project aims at operating an optical lattice clock on the ISS in approximately 2023. The scientific goals of the mission are to perform tests of fundamental physics, to enable space-assisted relativistic geodesy and ...
  +28 more
core   +4 more sources

Galgedil

open access: yesDanish Journal of Archaeology, 2014
Galgedil is a Viking Age cemetery located in the northern part of the Danish island of Funen. Excavations at the site revealed 54 graves containing 59 inhumations and 2 cremation burials. Previous study of the remains to date has included light isotopes
T. Douglas Price   +4 more
doaj   +1 more source

Quantum degenerate mixtures of strontium and rubidium atoms

open access: yes, 2013
We report on the realization of quantum degenerate gas mixtures of the alkaline-earth element strontium with the alkali element rubidium. A key ingredient of our scheme is sympathetic cooling of Rb by Sr atoms that are continuously laser cooled on a ...
Bayerle, Alex   +7 more
core   +1 more source

Testing the 87Sr/86Sr isotopic ratio measured by ICP-MS as a tracer for inter-well investigation in oil reservoirs

open access: yesEPJ Web of Conferences, 2013
The use of the 87Sr/86Sr isotope ratio has been tested as a natural tracer for inter-well tests in oil reservoirs using standard mass-spectrometry equipment. Such an application can have a special interest to offshore oil fields.
Palmieri H.E.L.   +2 more
doaj   +1 more source

Hair radioactivity as a measure of exposure to radioisotopes [PDF]

open access: yes, 1972
Since many radioisotopes accumulate in hair, this tropism was investigated by comparing the radioactivity of shaved with plucked hair collected from rats at various time intervals up to 24 hrs after intravenous injection of the ecologically important ...
Flynn, A.   +3 more
core   +1 more source

Strontium isotope stratigraphy of the Cretaceous

open access: yesGeological Society, London, Special Publications
Abstract This contribution outlines the methodology of strontium isotope stratigraphy, and reviews the information that underpins the calibration curve of marine- 87 Sr/ 86 Sr against time for the Cretaceous.
John M. McArthur, Richard J. Howarth
openaire   +2 more sources

Shielding Calculation of Isotope Battery Based on cosRMC

open access: yesYuanzineng kexue jishu
As a new type of energy system, thermoelectric isotope battery system is widely used in deep space and deep sea exploration missions. Strontium titanate fuel is used as the heat source for thermoelectric isotope batteries.
WANG Yiqi1, LIU Shichang1, JIN Chengjian1, LI Rui1, SUN Ningyan1, HAN Yi2,3, ZHANG Xian1, CHEN Yixue1
doaj   +1 more source

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