Filters
Results 1 - 10 of 2107
Results 1 - 10 of 2107.
Search took: 0.022 seconds
Sort by: date | relevance |
Perras, Frédéric A.; Boteju, Kasuni C.; Iowa State University, Ames, IA; Slowing, Igor I.; Iowa State University, Ames, IA
Ames Laboratory (AMES), Ames, IA (United States). Funding organisation: USDOE Office of Science - SC, Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division (United States); USDOE (United States)2018
Ames Laboratory (AMES), Ames, IA (United States). Funding organisation: USDOE Office of Science - SC, Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division (United States); USDOE (United States)2018
AbstractAbstract
[en] In this work, we utilize direct 17O DNP for the characterization of non-protonated oxygens in heterogeneous catalysts. The optimal sample preparation and population transfer approach for 17O direct DNP experiments performed on silica surfaces is determined and applied to the characterization of Zr- and Y-based mesoporous silica-supported single-site catalysts.
Primary Subject
Source
IS-J--593; OSTIID--1427737; AC02-07CH11358; Available from https://www.osti.gov/pages/biblio/1427737; DOE Accepted Manuscript full text, or the publishers Best Available Version will be available free of charge after the embargo period; arXiv:1801.01536; Country of input: United States
Record Type
Journal Article
Journal
ChemComm; ISSN 1359-7345;
; v. 54(28); p. 3472-3475

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] Cross sections for the 17O(n,p)17N (T1/2 = 4.7 s) reaction in the energy region between 13.7 and 14.9 were measured by the activation method using the Fusion Neutronics Source (FNS) at the Japan Atomic Energy Research Institute. Cross sections for the reaction obtained were 23 ± 5, 11 ± 4, and <7 mb at 14.9 ± 0.1, 14.4 ± 0.1, and 13.7 ± 0.1 MeV, respectively. This work uniquely gives the experimental partial excitation function for the ∼14-MeV reaction
Primary Subject
Source
Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
BARYON REACTIONS, BARYONS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CROSS SECTIONS, DIFFERENTIAL CROSS SECTIONS, ELEMENTARY PARTICLES, ENERGY RANGE, EVEN-ODD NUCLEI, FERMIONS, FUNCTIONS, HADRON REACTIONS, HADRONS, ISOTOPES, JAPANESE ORGANIZATIONS, LIGHT NUCLEI, NATIONAL ORGANIZATIONS, NITROGEN ISOTOPES, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, NUCLEONS, ODD-EVEN NUCLEI, OXYGEN ISOTOPES, RADIOISOTOPES, SECONDS LIVING RADIOISOTOPES, STABLE ISOTOPES, TARGETS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Because of the still present uncertainties on its rate, the 17O(p,α)14N is one of the most important reaction to be studied in order to get more information about the fate of 17O in different astrophysical scenarios. The preliminary study of the three-body reaction 2H(17O,α14N)n is presented here as a first stage of the indirect study of this important 17O(p,α)14N reaction through the Trojan Horse Method (THM)
Primary Subject
Source
10. international symposium on origin of matter and evolution of galaxies: From the dawn of Universe to the formation of solar system; Sapporo (Japan); 4-7 Dec 2007; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
BARYON REACTIONS, BARYONS, BINARY STARS, CHARGED PARTICLES, CHARGED-PARTICLE REACTIONS, ELEMENTARY PARTICLES, ERUPTIVE VARIABLE STARS, EVEN-ODD NUCLEI, FERMIONS, HADRON REACTIONS, HADRONS, HEAVY ION REACTIONS, HYDROGEN ISOTOPES, IONIZING RADIATIONS, ISOTOPES, KINETICS, LIGHT NUCLEI, MANY-BODY PROBLEM, NITROGEN ISOTOPES, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, NUCLEONS, ODD-ODD NUCLEI, OXYGEN ISOTOPES, PHYSICS, RADIATIONS, REACTION KINETICS, STABLE ISOTOPES, STARS, SYNTHESIS, TARGETS, VARIABLE STARS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] Using Q-box techniques, linked expansions in terms of the number of folds are carried out for j = 5/2, 1/2 and 3/2 states of 17O, where the complete 0 + 2(h/2π)ω space is included. These expansions are shown to converge very quickly and are compared to energy matrix diagonalizations. The series involved in obtaining the archetypal Q-boxes however converges rather slowly in this space. Calculations are performed for various shift operators with the original and modified Sussex matrix elements. (Auth.)
Primary Subject
Record Type
Journal Article
Journal
Nuclear Physics. A; ISSN 0375-9474;
; v. 326(1); p. 83-96

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Mateescu, G.D.; Yvars, G.M.; Pazara, D.I.; Kuhn, W.
Synthesis and applications of isotopically labelled compounds 19881989
Synthesis and applications of isotopically labelled compounds 19881989
AbstractAbstract
[en] O-17 NMR imaging is shown to be a valuable alternative or complement to proton imaging. The properties of this nucleus, generally believed 'unfavorable' for such applications, can in fact be turned into an advantage, and excellent images can be obtained. Moreover, the presence of O-17 in H2O at various levels of enrichment can drastically affect relative intensities in proton images. Thus, the O-17 nucleus can constitute a useful, nontoxic, direct and indirect contrast agent in magnetic resonance imaging. After a brief presentation of the principles of MRI, biomedical, biological and materials research applications are described in this paper. The prospects for using O-17 in imaging and localized spectroscopy are discussed in the conclusion. (author). 8 refs.; 9 figs.; 1 tab
Primary Subject
Source
Baille, T.A. (Washington Univ., Seattle, WA (USA). Dept. of Medicinal Chemistry); Jones, J.R. (Surrey Univ., Guildford (UK). Dept. of Chemistry) (eds.); 860 p; ISBN 0-444-87368-6;
; 1989; p. 499-508; Elsevier; Amsterdam (Netherlands); International symposium on the synthesis and applications of isotopically labelled compounds; Innsbruck (Austria); 17-21 Jul 1988

Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Direct laboratory measurements of astrophysically important nuclear reactions become increasingly more difficult as regions of lower bombarding energies are being explored. As examples for these challenging experiments, we will report on recent measurements of the 17O(p,γ)18F and 23Na(p,γ)24Mg reactions at the Laboratory for Experimental Nuclear Astrophysics (LENA). We will discuss a typical experimental setup, will present recent experimental results, and will describe their impact on stellar nucleosynthesis
Primary Subject
Source
8. international symposium on nuclei in the cosmos; Vancouver, BC (Canada); 19-23 Jul 2004; S0375-9474(05)00656-1; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
Country of publication
ALKALINE EARTH ISOTOPES, BARYON REACTIONS, BETA DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CHARGED-PARTICLE REACTIONS, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, FLUORINE ISOTOPES, HADRON REACTIONS, HOURS LIVING RADIOISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, LIGHT NUCLEI, MAGNESIUM ISOTOPES, NANOSECONDS LIVING RADIOISOTOPES, NUCLEAR REACTIONS, NUCLEI, NUCLEON REACTIONS, ODD-EVEN NUCLEI, ODD-ODD NUCLEI, OXYGEN ISOTOPES, PHYSICS, RADIOISOTOPES, SODIUM ISOTOPES, STABLE ISOTOPES, SYNTHESIS, TARGETS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] It is shown that the magnetic elastic form factor of 17O can be accounted for by current nuclear theory. After making allowance for theoretical uncertainties regarding the high-q behavior of the M1 and M3 form factors, the rms radius of the 1d/sub 5/2/ neutron orbit is found to be 3.56 +- 0.09 fm. Quantitative information on the quenching of the M3 and M5 multipoles is also deduced
Primary Subject
Record Type
Journal Article
Journal
Physical Review. C, Nuclear Physics; ISSN 0556-2813;
; v. 25(2); p. 695-699

Country of publication
BARYONS, BASIC INTERACTIONS, ELECTROMAGNETIC INTERACTIONS, ELEMENTARY PARTICLES, EVEN-ODD NUCLEI, FERMIONS, HADRONS, INTERACTIONS, ISOTOPES, LEPTON REACTIONS, LIGHT NUCLEI, MATHEMATICAL MODELS, NUCLEAR MODELS, NUCLEAR PROPERTIES, NUCLEAR REACTIONS, NUCLEI, NUCLEONS, OXYGEN ISOTOPES, PARTICLE PROPERTIES, SCATTERING, STABLE ISOTOPES, TARGETS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Original Title
Inelastische Streuung von 17O an 40Ca
Primary Subject
Source
DPG spring meeting and advanced training meeting of the Fachausschuss Kernphysik, Sektion A: Nuclear physics; Heidelberg, Germany, F.R; 13 - 18 Mar 1978; AED-CONF--78-084-363; Short communication only.
Record Type
Journal Article
Literature Type
Conference
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; (no. 4); p. 942
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Kuehner, J.A.; Spear, R.H.; Vermeer, W.J.; Esat, M.T.; Baxter, A.M.; Hinds, S.
Australian National Univ., Canberra. Dept. of Nuclear Physics1982
Australian National Univ., Canberra. Dept. of Nuclear Physics1982
AbstractAbstract
[en] The contribution of the giant dipole resonance to the Coulomb excitation of 17O by 208Pb has been measured to be 5.7 +- 0.4 times the value given by the hydrodynamic model. This result has significant implications for the determination of B(E2) values and quadrupole moments from Coulomb excitation measurements
Primary Subject
Source
Jun 1982; 11 p; 21 refs.
Record Type
Report
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The delayed neutron spectrum following β- decay of the 4.17 sec 17N has been measured with high-resolution 3He spectrometers. The intensities of the neutron branches from levels in 17O at 4549.3 +- 1.3, 5081 +- 21, 5387.1 +- 1.2 and 5949.9 +- 1.9 keV excitation energy result in 17N β- transitions of (34.8 +- 2.6), (0.6 +- 0.4), (52.7 +- 3.5) and (7.0 +- 0.5)%, respectively. The neutron widths of these states were determined as 54.8 +- 0.4, 113 +- 55, 63.2 +- 1.1 and 60.5 +- 3.2 keV, respectively, in disagreement with previously reported values. The results are compared with theoretical calculations and with the mirror decay of 17Ne. (Auth.)
Primary Subject
Record Type
Journal Article
Literature Type
Numerical Data
Journal
Nuclear Physics. A; v. 274(1-2); p. 45-52
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |