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991.
992.
M. Karny L. Batist A. Banu F. Becker A. Blazhev B. A. Brown W. Brüchle J. Döring T. Faestermann M. Górska H. Grawe Z. Janas A. Jungclaus M. Kavatsyuk O. Kavatsyuk R. Kirchner M. La Commara S. Mandal C. Mazzocchi K. Miernik I. Mukha S. Muralithar C. Plettner A. Płochocki E. Roeckl M. Romoli K. Rykaczewski M. Schädel K. Schmidt R. Schwengner J. Żylicz 《The European Physical Journal A - Hadrons and Nuclei》2006,27(2):129-136
The β decays of 102Sn and 104Sn were studied by using high-resolution germanium detectors as well as a Total Absorption Spectrometer (TAS). For 104Sn, with three new β-delayed γ-rays identified, the total Gamow-Teller strength (BGT) value of 2.7(3) was obtained. For 102Sn, the γ-γ coincidence data were collected for the first time, allowing us to considerably extend the decay scheme. This
scheme was used to unfold the TAS data and to deduce a BGT value of 4.2(8) for this decay. This result is compared to shell model predictions, yielding a hindrance factor of 3.6(7)
in agreement with those obtained previously for 98Cd and 100In. Together with the latter two, 102Sn completes the triplet of Z ⩽ 50, N ≥ 50 nuclei with two proton holes, one proton hole and one neutron particle, and two neutron particles with respect to the
doubly magic 100Sn core. 相似文献
993.
Munshi G Mustafa Sudhir Raniwala T Awes B Rai RS Bhalerao JG Contreras RV Gavai SK Ghosh P Jaikumar GC Mishra AP Mishra H Mishra B Mohanty J Nayak J-Y Ollitrault SC Phatak L Ramello R Ray PK Sahu AM Srivastava DK Srivastava VK Tiwari 《Pramana》2006,67(5):961-981
This is the report of Heavy Ion Physics and Quark-Gluon Plasma at WHEPP-09 which was part of Working Group-4. Discussion and
work on some aspects of quark-gluon plasma believed to have created in heavy-ion collisions and in early Universe are reported. 相似文献
994.
995.
Crosslinking of strongly charged chains via multivalent ions of valence z was treated within the Flory approach, which accounts only for the treelike architecture of the clusters formed. Density–density correlations due to the electrostatic nature of the system were considered with a modified random‐phase approximation. At a certain concentration of multivalent ions that play the role of effective stickers among z monomers, an infinitely large polymer network was formed. We analyzed the gelation driven by the formation of locally neutral clusters induced by divalent and trivalent ions. © 2004 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 42: 766–776, 2004 相似文献
996.
M. F. M. Sciacca D. Milardi M. Pappalardo C. La
Rosa D. M. Grasso 《Journal of Thermal Analysis and Calorimetry》2006,86(2):311-314
The failure
of the ubiquitin-proteasome system is involved in many diseases. Here, in
order to assess the pH-induced changes in the physico-chemical properties
of ubiquitin, DSC measurements have been carried out at 2.5 physico-chemical
properties of ubiquitin, DSC measurements have been carried out at 2.5 相似文献
997.
一类Pickands型估计量的收敛性 总被引:4,自引:0,他引:4
本文在极值分布指数为负时,给出了一类新的Pickands型估计量,并研究此估计量的相合性、强收敛速度与浙近分布。 相似文献
998.
J. De La Torre A. Souifi A. Poncet C. Busseret M. Lemiti G. Bremond G. Guillot O. Gonzalez B. Garrido J. R. Morante C. Bonafos 《Physica E: Low-dimensional Systems and Nanostructures》2003,16(3-4):326
In this work, we describe how to fabricate good quality 3 nm nc-Si with low size distribution in thermal SiO2 oxides. Photoluminescence, excited photoluminescence, and photocurrent measurements are discussed on the basis of theoretical calculations of the quantified levels in nc-Si. The impact of shape and size in quantum dots on transition energies has been highlighted, thanks to 2D symmetrical self-consistent Poisson–Schrödinger simulations. Both direct and indirect gaps in silicon have been considered in order to carry out a better comparison between simulations and optical measurements. A good agreement is found between simulations and experimental data for the indirect gap of 3 nm dots which show a threshold energy around 2 eV. However, the optical recombinations seems to be related to lower energy states probably due to interfacial radiative defects around 1.58 eV. On the basis of highly luminescent nc-Si, we have fabricated an optimized light emitting device (LED) with a calculated design in order to favour both electron and hole injection. Stable red electroluminescence has been obtained at room temperature and the I–V measurements confirm that the current is related to a pure tunnelling process. A modelling of I–V curves confirms a Hopping mechanism with an average trap distance between 1.4 and 1.9 nm. The Fowler–Nordheim process is not observed during light emission for electric fields below 5 MV/cm. Finally, we have not hot carrier injection and thus it seems possible to develop Si-based LEDs with a good reliability. 相似文献
999.
1000.
M. Sandoli L. Campajola A. De Rosa A. D’Onofrio G. Inglima M. La Commara A. Ordine D. Pierroutsakou V. Roca M. Romano M. Romoli F. Terrasi M. Trotta G. Cardella M. Papa G. Pappalardo F. Rizzo N. Alamanos F. Auger A. Gillibert 《Zeitschrift für Physik A Hadrons and Nuclei》1997,357(1):67-74
The energy spectra of the γ-rays emitted in the 35Cl + 92Mo reaction at incident energy E = 260 MeV were measured in coincidence with the ejectiles produced in dissipative reaction events. The cumulative energy spectrum of the γ-rays coming from the decay of the ejectiles was calculated within the statistical model and its comparison to the experimental spectrum evidences an excess in the data for E γ = 8 to 12 MeV. Such an excess, fitted with a Lorentz curve, is attributed to the preequilibrium GDR γ-decay of the intermediate dinuclear system. The centroid energy of the Lorentz curve corresponds to a dipole oscillation along the symmetry axis of the system and its width is found to be comparable to that of the ground state GDR low energy component of the deformed dinucleus. The small quantal dispersion Δ? = (10.3 ± 0.1)? of the entrance channel angular momentum, determined by analysing the dissipative fragment angular distribution in the framework of the Strutinsky model, is suggested to limit the broadening of the preequilibrium GDR width. 相似文献