Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Primordial nuclide"'
Publikováno v:
The European Physical Journal A. 57
It is a well-established fact that the generation of the heavy elements occurred in stars—the Cauldrons of the Cosmos—via multiple complex nuclear reaction processes during stellar life and death. This paper will address the question of the first
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dceb015e4b1ba4212bb672ac76a5087a
https://doi.org/10.1140/epja/s10050-020-00339-x
https://doi.org/10.1140/epja/s10050-020-00339-x
Autor:
Rutgers van der Loeff, Michiel M
Publikováno v:
Encyclopedia of Ocean Sciences (Second Edition)
Natural radioactivity provides tracers in a wide range of characteristic timescales and reactivities, which can be used as tools to study the rate of reaction and transport processes in the ocean. Apart from cosmogenic nuclides and the long-lived rad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d5bf8efd27d88155cdd584182777d85
https://doi.org/10.1016/b978-0-12-409548-9.09128-4
https://doi.org/10.1016/b978-0-12-409548-9.09128-4
Autor:
Robert C. Reedy
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 361:500-504
Good production rates are needed for cosmic-ray-produced nuclides to interpret their measurements. Rates depend on many factors, especially the pre-atmospheric object’s size, the location of the sample in that object (such as near surface or deep i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33d2cb44519098f5fa023a0bd8e56762
https://doi.org/10.1016/j.nimb.2015.04.012
https://doi.org/10.1016/j.nimb.2015.04.012
Autor:
Marc Chaussidon, Matthieu Gounelle
Publikováno v:
Comptes Rendus Geoscience. 339:872-884
Now extinct, short-lived radioactive nuclides, such as 7 Be ( T 1/2 = 53 days), 10 Be ( T 1/2 = 1.5 Ma), 26 Al ( T 1/2 = 0.74 Ma), 36 Cl ( T 1/2 = 0.3 Ma), 41 Ca ( T 1/2 = 0.1 Ma), 53 Mn ( T 1/2 = 3.7 Ma) and 60 Fe ( T 1/2 = 1.5 Ma), were present in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e54d49f032ec9f904cab4b38899e1d4
https://doi.org/10.1016/j.crte.2007.09.005
https://doi.org/10.1016/j.crte.2007.09.005
Autor:
Colin Maden, Kyeong Ja Kim, Rainer Wieler, Kurt Marti, Sheng Xu, Stewart P.H.T. Freeman, D. Lal, S. Taylor, A. J. T. Jull, C. Schnabel, Robert C. Finkel, A. Grimberg, L. Vacher, L. R. McHargue
Publikováno v:
Meteoritics & Planetary Science. 42:1831-1840
We report on studies of the concentrations of cosmogenic nuclides in the magnetic fraction of cosmic dust particles recovered from the South Pole Water Well (SPWW) and from Greenland. Our results confirm that cosmic dust material from these locations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d9b10f6cc7ceed879ef6f756e758403
https://doi.org/10.1111/j.1945-5100.2007.tb00541.x
https://doi.org/10.1111/j.1945-5100.2007.tb00541.x
Autor:
Rainer Wieler, Jozef Masarik
Publikováno v:
Earth and Planetary Science Letters. 216:201-208
We study how the production rates of cosmogenic nuclides in solid targets at the Earth’s surface depend on the shape and size of a sampled rock and the position of a sample. We use a physical model simulating the interaction of galactic cosmic ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62bc8bb2a4109b223c530130c3af027d
https://doi.org/10.1016/s0012-821x(03)00476-x
https://doi.org/10.1016/s0012-821x(03)00476-x
Autor:
J. J. Shen, Typhoon Lee
Publikováno v:
The Astrophysical Journal. 596:L109-L112
For every 1100 lanthanum atoms in the solar system, only one is 138La. Relative to this low abundance, even a tiny additional 138La made by irradiating its more abundant neighboring nuclides with energetic protosolar flare particles would cause a lar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed2528ec7ffe23ba4a47a8b31478b74c
https://doi.org/10.1086/379208
https://doi.org/10.1086/379208
Autor:
S. Jiang, Dan Berkovits, Michael Paul, A. Valenta, Takashi Nakanishi, Y. Hashimoto, C. Bordeanu, I. Ahmad, A. Hershkowitz, K. Sakamoto, S. Ghelberg
Publikováno v:
Nuclear Physics A. 719:C29-C36
The detection of cosmic γ radioactivity of live nuclides from supernovae remnants during the last decade has had an immense impact on our understanding of stellar nucleosynthesis. It is expected that, similarly, nuclides such as 146 Sm, 244 Pu, 182
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f9556fa04863482a27064f01b133107
https://doi.org/10.1016/s0375-9474(03)00954-0
https://doi.org/10.1016/s0375-9474(03)00954-0
Publikováno v:
Meteoritics & Planetary Science. 37:1711-1728
Cosmic-ray-produced (cosmogenic) nuclides were studied in fragments of the Brenham pallasite, a large stony iron meteorite. The contents of light noble gases (He, Ne, and Ar) and long-lived radionuclides (10Be, 26Al, 36Cl, and 53Mn), produced by nucl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31ccb7ee8c99658a1865902699c5c7af
https://doi.org/10.1111/j.1945-5100.2002.tb01159.x
https://doi.org/10.1111/j.1945-5100.2002.tb01159.x
Autor:
Hannu Kurki-Suonio
Publikováno v:
Space Science Reviews. 100:249-261
I review standard big bang nucleosynthesis and some versions of nonstandard BBN. The abundances of the primordial isotopes D, He-3, and Li-7 produced in standard BBN can be calculated as a function of the baryon density with an accuracy of about 10%.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efa68a6b87e5c3e06ceabef7cbe12cec
https://doi.org/10.1023/a:1015886632106
https://doi.org/10.1023/a:1015886632106