Results 41 to 50 of about 111,155 (292)

Changes in r-process abundances at late times [PDF]

, 2001
We explore changes in abundance patterns that occur late in the r process. As the neutrons available for capture begin to disappear, a quasiequilibrium funnel shifts material into the large peaks at A=130 and A=195, and into the rare-earth "bump" at A ...
B. S. Meyer, B. S. Meyer, C. Freiburghaus, E. M. Burbidge, J. Engel, J. Engel, J. J. Cowan, P. Möller, P. Möller, R. D. Hoffman, R. Surman, R. Surman, S. Goriely, S. Goriely, T. Rauscher, Y.-Z. Qian   +15 more
core   +3 more sources

Neutron Capture Cross Section Measurement on 91Zr at J-PARC/MLF/ANNRI

EPJ Web of Conferences, 2015
The neutron capture cross section measurement on 91Zr was performed at neutron TOF beam line ANNRI installed at J-PARC/MLF. Prompt capture gamma rays from the sample were detected with an array of large Ge detectors at a distance of 21.5 m from the ...
Hori Jun-ichi, Yashima Hiroshi, Nakamura Shoji, Furutaka Kazuyoshi, Hara Kaoru Y., Harada Hideo, Hirose Kentaro, Igashira Masayuki, Katabuchi Tatsuya, Kimura Atsushi, Kino Koichi, Kitatani Fumito, Kiyanagi Yoshiaki, Koizumi Mitsuo, Mizumoto Motoharu, Sano Tadafumi, Takahashi Yoshiyuki, Toh Yosuke   +17 more
doaj   +1 more source

Shell Model Applications in Nuclear Astrophysics

Physics, 2022
In recent years, shell model studies have significantly contributed in improving the nuclear input, required in simulations of the dynamics of astrophysical objects and their associated nucleosynthesis.
Gabriel Martínez-Pinedo, Karlheinz Langanke   +1 more
doaj   +1 more source

Neutron-capture elements in the very metal-poor star HD88609: another st ar with excesses of light neutron-capture elements

, 2007
We obtained a high resolution, high signal-to-noise UV-blue spectrum of the extremely metal-poor red giant HD88609 to determine the abundances of heavy elements. Nineteen neutron-capture elements are detected in the spectrum.
Noguchi K., Satoshi Honda, Shinya Wanajo, Wako Aoki, Yuhri Ishimaru   +4 more
core   +1 more source

The s-process branching at 185W [PDF]

, 2002
The neutron capture cross section of the unstable nucleus 185W has been derived from experimental photoactivation data of the inverse reaction 186W(gamma,n)185W.
A. Mengoni, A. Zilges, F. Kappeler, Goryachev A. M., H. Beer, K. Sonnabend, K. Vogt, Koehler P. E., Lambert D. L., Mengoni A., Mohr P., P. Mohr, R. Gallino, T. Rauscher   +13 more
core   +2 more sources

Np-237 incineration study in various beams in ADS setup QUINTA

Nukleonika, 2018
Neptunium-237 samples were irradiated in a spallation neutron field produced in accelerator-driven system (ADS) setup QUINTA. Five experiments were carried out on the accelerators at the JINR in Dubna - one in carbon (C6+), three in deuteron, and one in ...
Kilim Stanisław, Strugalska-Gola Elżbieta, Szuta Marcin, Bielewicz Marcin, Tyutyunnikov Sergej I., Furman Walter I., Adam Jindra, Stegailov Vladimir I.   +7 more
doaj   +1 more source

Extracting Technetium from Neutral Molybdenum Solution with Activated Carbon Filber

Journal of Isotopes, 2021
The use of the chromatographic method to extract 99Tcm from the low specific activity 99Mo solution is an effective way to obtain medical isotope 99Tcm that meeting clinical requirements.
SONG Zhihao;ZHANG Yunhan;WANG Ning;GUO Hongli;ZHAO Hailong;GAO Xiang
doaj   +1 more source

A holistic abundance analysis of r-rich stars

, 2010
The chemical abundances of metal-poor stars are an excellent test bed by which to set new constraints on models of neutron-capture processes at low metallicity.
Andrievsky, Aoki, Aoki, Arlandini, Arnould, Barklem, Bo Zhang, Burbidge, Busso, Christlieb, Cowan, Cowan, Cowan, Fields, Francois, Hayek, Hill, Honda, Honda, Honda, Ishimaru, Ivans, Izutani, Jiang Zhang, Johnson, Käppeler, Masseron, McWilliam, McWilliam, Miller, Montes, Plez, Qian, Qian, Roederer, Ryan, Sneden, Sneden, Sneden, Sneden, Sneden, Sneden, Spite, Travaglio, Travaglio, Truran, Wanajo, Wenyuan Cui, Westin, Woosley   +49 more
core   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Near-UV Observations of CS29497-030: New Constraints on Neutron-Capture Nucleosynthesis Processes

, 2005
Employing spectra obtained with the new Keck I HIRES near-UV sensitive detector, we have performed a comprehensive chemical composition analysis of the binary blue metal-poor star CS29497-030. Abundances for 29 elements and upper limits for an additional
Christopher Sneden, Delaude D., Fitzpatrick M. J., George W. Preston, Inese I. Ivans, John J. Cowan, Roberto Gallino   +6 more
core   +1 more source