[en] A scheme for teleporting an unknown two-particle state is proposed when two general W states are utilized as quantum channels. In this scheme, besides the sender's Bell state measurements, the recipient need introduce an auxiliary particle, perform Von Neumann measurements and carry out appropriate unitary transformation. Finally, the recipient can realize teleportation with different probabilities of successful teleportation by selecting different particles to recover the original state. In order to gain the biggest probability of successful teleportation, it is useful to select proper particles to reconstruct the state to be teleported. (author)

[en] Isotopic cross-sections of projectile-like residues produced in ¹¹²Sn + ¹¹²Sn and ¹²⁴Sn + ¹²⁴Sn reactions at an incident beam energy of 1A GeV are studied in the framework of the multi-source thermal model. The multiplicity-like distribution of neutrons in projectile-like isotopes can be successfully expressed by using the Erlang distribution which is the folding result of multi-exponential distributions with the same parameter. The results calculated by using the model are in agreement with the experimental data of Fohr et al. [arXiv:1106.5368vl [nucl-ex]].

[en] The transverse momentum distributions of final-state particles produced in collisions at energies available at the Large Hadron Collider (LHC) are studied by using the two-Boltzmann distribution and Tsallis statistics. Experimental distributions described by the two-Boltzmann distribution can be described by the Tsallis statistics. The two-temperature emission described by the two-Boltzmann distribution reflects temperature fluctuation of interacting system. The Tsallis statistics can describe the temperature fluctuation and the degree of non-equilibrium. The results calculated by the two-Boltzmann distribution and the Tsallis statistics are in agreement with the experimental data available at the LHC energies. In some cases, the two-Boltzmann distribution degenerates to (single) Boltzmann distribution. (orig.)

[en] Two-particle azimuthal correlations are studied in the framework of a multisource thermal model. Each source is assumed to produce many particles. Each particle pair measured in final state is considered to be produced at two emission points (subsources) in a single or two sources. The first emission point corresponds to the production of “trigger” particle and the second one corresponds to that of “associated” particle. There are oscillations and other interactions between the two emission points. In the rest frame of the “associated” particle's emission point, the oscillations and other interactions cause the momentum of the “trigger” particle to depart from the original value. The modelling results are in agreement with the experimental data of proton-lead (p-Pb) collisions at √(s_N_N) = 5.02 TeV, one of the Large Hadron Collider energies, measured by the ALICE and ATLAS Collaborations

[en] The transverse momentum spectra obtained in the frame of an isotropic emission source are compared in terms of Tsallis, Boltzmann, Fermi-Dirac, and Bose-Einstein distributions and the Tsallis forms of the latter three standard distributions. It is obtained that, at a given set of parameters, the standard distributions show a narrower shape than their Tsallis forms which result in wide and/or multicomponent spectra with the Tsallis distribution in between. A comparison among the temperatures obtained from the distributions is made with a possible relation to the Boltzmann temperature. An example of the angular distributions of projectile fragments in nuclear collisions is given

[en] By adding slag, fly ash and zeolite as mineral admixture modifying the ordinary Portland cement, a process recipe of big solid solubility, low exudation rate, good flow ability and low nuclide leaching rate was obtained. Influences of material composition, liquid-cement ratio, salt concentration and coagulant over extended fluidity, bleeding rate and setting time were investigated. Results show that: use mineral admixtures instead of cement can exert pozzolanic effect and water-reducing effect, improving the waste liquid. capacity and bleeding and salting-out of the solidification form; the slag and fly ash can improve the fluidity of paste, zealot significantly prolong the setting time; As the salt concentration increases, the expansion of fluidity and bleeding rate decreases, the setting time extends; Triethanolamine can effectively shorten the construction of cement solidification time. When the content is 1%, setting time of PSFZ shortened to 4 h 22 min, final setting time shortened to 5 h 2 min, satisfies the requirement of national standard. (authors)

[en] The transverse momentum spectrums of π^-, π⁺, K^-, K⁺, anti p, and p produced in p-Pb collisions at √(s_NN) = 502 TeV measured by the CMS Collaboration and in Pb-Pb collisions at √(s_NN) = 2.76 TeV measured by the ALICE Collaboration are described by a two-component Erlang distribution. The first component corresponds to ''soft'' excitation process and contributes in the low transverse momentum region, which is contributed by 2-5 partons (sea quarks and gluons) with strong interactions. The second component corresponds to ''hard'' scattering process and contributes in the high transverse momentum region, which is contributed by 2 partons (valent quarks) with violent head-on collision. Each parton source contributes an exponential transverse momentum spectrum. Both the soft and hard processes result in an Erlang distribution. The transverse momentum spectrums of final-state charged particles are then described by the two-component Erlang distribution. The contribution ratio (30-40%) of the hard process extracted from nuclear collisions at the Large Hadron Collider is consistent with that (17-46%) obtained from other methods. (orig.)

[en] The transverse momentum and pseudorapidity distributions of charged particles produced in Pb-Pb collisions with different centrality intervals at center-of-mass energy per nucleon pair √(s_N_N)=2.76 TeV have been analyzed by using the improved multisource thermal model in which the whole interacting system and then the sources are described by the Tsallis statistics. The modelling results are in agreement with experimental data of the ALICE Collaboration. The rapidity distributions of charged particles are obtained according to the extracted parameter values. The shapes of interacting events (the dispersion plots of charged particles) are given in the momentum, rapidity, velocity, and coordinate spaces. Meanwhile, the event shapes in different spaces consisted by different transverse quantities and longitudinal quantities are presented

[en] Pseudorapidity distributions of charged particles produced in proton-proton (p-p) or proton-antiproton (p-p-bar collisions over an energy range from 0.053 to 7 TeV are studied by using the four-component Landau hydrodynamic model. The results calculated by the model are in agreement with the experimental data of the UA5, PHOBOS, UA1, P238, CDF, ALICE, and CMS Collaborations which present orderly from low to high energies. According to the distribution widths of different components, the values and some features of square speed of sound parameter c_s"2 for “participant” and “spectator” quark components are obtained. It is shown that the speed of sound for “participant” quark components agrees approximately with that for “spectator” quark components in the error ranges. The present work is useful for studying nucleus-nucleus collisions in the related energy range

[en] Radionuclide analysis of 48 groups of aerosol samples collected in four cities of Hubei Province from December 2017 to November 2018 was carried out by wide energy low background HPGe BE6530, the correlation between the analysis results and the concentration of PM_2.5 or PM₁₀ or SO₂ or NO₂ was studied by SPSS. The monitoring results showed that the annual average values of ⁷Be, ²¹⁰Pb and ⁴⁰K were 4.793 mBq/m³, 1.481 mBq/m³, 56.2 mBq/m³, and 87.5% of ²³²Th activity concentration were lower than the detection limit, with a maximum value of 21.1 mBq/m³; 16.7% of ²²⁶Ra activity concentration were lower than the detection limit, with a maximum value of 19.8 mBq/m³; ²³⁸U activity concentrations were all lower than the detection limit. It was found that ²¹⁰Pb activity was significantly correlated with PM_2.5 and NO₂. (authors)