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11.
A. Akindinov A. Alici P. Antonioli S. Arcelli M. Basile G. Cara Romeo M. Chumakov L. Cifarelli F. Cindolo A. De Caro D. De Gruttola S. De Pasquale M. Fusco Girard C. Guarnaccia D. Hatzifotiadou H.T. Jung W.W. Jung D.W. Kim H.N. Kim J.S. Kim S. Kiselev G. Laurenti K. Lee S.C. Lee E. Lioublev M.L. Luvisetto A. Margotti A. Martemiyanov R. Nania F. Noferini P. Pagano A. Pesci R. Preghenella G. Russo E. Scapparone G. Scioli R. Silvestri Y. Sun I. Vetlitskiy K. Voloshin L. Vorobiev M.C.S. Williams B. Zagreev C. Zampolli A. Zichichi 《The European Physical Journal C - Particles and Fields》2007,50(2):341-352
In this work we explore the possibility to perform “effective energy” studies in very high energy collisions at the CERN large
hadron collider (LHC). In particular, we focus on the possibility to measure in pp collisions the average charged multiplicity
as a function of the effective energy with the ALICE experiment, using its capability to measure the energy of the leading
baryons with the zero degree calorimeters. Analyses of this kind have been done at lower centre-of-mass energies and have
shown that, once the appropriate kinematic variables are chosen, particle production is characterized by universal properties:
no matter the nature of the interacting particles, the final states have identical features. Assuming that this universality
picture can be extended to ion–ion collisions, as suggested by recent results from RHIC experiments, a novel approach based on the scaling hypothesis for limiting
fragmentation has been used to derive the expected charged event multiplicity in AA interactions at LHC. This leads to scenarios
where the multiplicity is significantly lower compared to most of the predictions from the models currently used to describe
high energy AA collisions. A mean charged multiplicity of about 1000–2000 per rapidity unit (at η∼0) is expected for the most
central Pb–Pb collisions at .
In memory of A. Smirnitskiy 相似文献
12.
Suzanne K. Estok Thomas A. Hughes IV Mary K. Carroll Ann M. Anderson 《Journal of Sol-Gel Science and Technology》2014,70(3):371-377
Silica aerogels were prepared using the precursor tetraethylorthosilicate (TEOS) via a rapid supercritical extraction (RSCE) method. Multiple consistent batches of monolithic TEOS-based aerogels were fabricated via an 8-h RSCE process. Fabricating TEOS-based aerogels with an RSCE method offers some distinct advantages. One advantage is the relative simplicity of the RSCE approach: liquid precursors are mixed and poured into a metal mold in a hydraulic hot-press, where gelation, aging and extraction of liquid from the pores occur. The precursor recipe employs TEOS, ethanol, water, oxalic acid to catalyze hydrolysis, and ammonia to catalyze the subsequent polycondensation reactions. Another advantage is that reaction of TEOS to form sol gels yields ethanol as a byproduct. A process that releases ethanol, rather than methanol (as in tetramethylorthosilicate (TMOS)-based aerogels) may be more appealing for commercial applications, involving scale-up of the process. The significantly lower cost of TEOS, compared to TMOS, is a considerable advantage. The TEOS-based RSCE aerogels are mesoporous and optically translucent, have bulk densities of 0.099(±0.003) g/cm3 and surface areas of 460(±10) m2/g. Signals observed in infrared and Raman spectra of the aerogels are consistent with Si–O framework bonds. Using scanning electron microscopy imaging, the surface morphology of the aerogel samples was imaged at magnifications up to 150 kX. 相似文献
13.
Nucleation and Growth Synthesis of Siloxane Gels to Form Functional,Monodisperse, and Acoustically Programmable Particles 下载免费PDF全文
C. Wyatt Shields IV Danping Sun Dr. Kennita A. Johnson Korine A. Duval Aura V. Rodriguez Dr. Lu Gao Prof. Paul A. Dayton Prof. Gabriel P. López 《Angewandte Chemie (International ed. in English)》2014,53(31):8070-8073
Nucleation and growth methods offer scalable means of synthesizing colloidal particles with precisely specified size for applications in chemical research, industry, and medicine. These methods have been used to prepare a class of silicone gel particles that display a range of programmable properties and narrow size distributions. The acoustic contrast factor of these particles in water is estimated and can be tuned such that the particles undergo acoustophoresis to either the pressure nodes or antinodes of acoustic standing waves. These particles can be synthesized to display surface functional groups that can be covalently modified for a range of bioanalytical and acoustophoretic sorting applications. 相似文献
14.
Gamayurova V. S. Vorobiev E. S. Davletshina G. A. Rzhechitskaya L. E. 《Kinetics and Catalysis》2021,62(3):360-366
Kinetics and Catalysis - Some of the kinetic parameters of esterifications of aliphatic acids and alcohols involving biocatalysts in nonaqueous media were analyzed using mathematical modeling. The... 相似文献
15.
The spectral dependence of the γ-radiation produced by channeled electrons of different energies, E = 600, 750 and 900 MeV in 0.35 mm thick diamond was measured with a NaI(Tl) photon spectrometer. The energy dependences of the basic spectral features of the channeling radiation were determined. 相似文献
16.
A simple model calculation of the channeling of charged particles in a curved crystal is presented. The characteristics of the powerful radiation from relativistic particles associated with the motion in a curved channel are discussed. 相似文献
17.
18.
We prove that when q is any odd prime power, the distance-2 graph on the set of vertices at maximal distance D from any fixed vertex of the Hemmeter graph HemD(q) is isomorphic to the graph QuadD-1(q) of quadratic forms on . 相似文献
19.
Zegrya G. G. Shashkov E. V. Karpova A. A. Vorobiev N. S. Freiman V. M. Zegrya A. G. Solomonov Yu. S. 《JETP Letters》2021,114(4):227-231
JETP Letters - In the explosive reaction of composites based on porous silicon with perchlorate oxidizers, a new effect has been discovered: the intensity accompanying the explosive reaction... 相似文献