نتایج جستجو برای: annihilation
تعداد نتایج: 9174 فیلتر نتایج به سال:
In this study, a positron annihilation lifetime spectrometer was set up and its resolution was optimized. The spectrometer is a fast-slow arrangement with time resolution of 250 ps. To obtain lifetime components and their intensities from analyzing positron annihilation lifetime spectrum, the Pascual software is used. Positrons are from a source of radioactive 22NaCl with 20 μCi activity enclos...
in islamic mysticism by annihilation it is meant the removal of any determination, tendency of delimitation to non-delimitation and transformation of multiplicity into unity. the study of historical development of the concept of annihilation can be helpful in understanding and analyzing this fundamental doctrine of mysticism. in early mystical works extant in world of islam, hardly can one find...
Positron annihilation lifetime spectroscopy method with valuation of non-destructive investigation of material, provides information about electron density, defect concentration, type of defects and atoms around the defects. The stability of the system was tested with a source. The time resolution of the whole system has been derived about 365 ps at FWHM. Then n- and p-type silicon samples we...
In this paper, we examine the singlet scalar dark matter annihilation to becoming the Standard Model particles in the non-commutative space. In the recent decades, many candidates of dark matter have been offered, but our information about the nature of dark matter is still limited. There are such particle candidates as scalar matetr, fermion, boson, gauge boson, etc.; however, they have nei...
a set $s$ of vertices in a graph $g$ is a dominating set if every vertex of $v-s$ is adjacent to some vertex in $s$. the domination number $gamma(g)$ is the minimum cardinality of a dominating set in $g$. the annihilation number $a(g)$ is the largest integer $k$ such that the sum of the first $k$ terms of the non-decreasing degree sequence of $g$ is at most the number of edges in $g$. in this p...
We give perturbative predictions for the distribution of the C-parameter event shape variable in e + e − annihilation, including resummation of large logarithms in the two-jet (small-C) region, matched to next-to-leading order results. We also estimate the leading non-perturbative power correction and make a preliminary comparison with experimental data.
Role of ∆ exchange for p¯ p annihilation into two-pion and three-pion channels Abstract p¯ p annihilation into two pions and three pions is studied in a baryon-exchange model. Annihilation diagrams involving nucleon as well as ∆-resonance exchanges are included consistently in the two-and three-pion channels. Effects from the initial-state interaction are fully taken into account. A comparison ...
The neglected annihilation contributions in the Wilson loop formalism of Eichten and Feinberg are defined and calculated. An annihilation time scale is introduced to discriminate the glueball contributions from true annihilation contributions to isoscalar-pseudoscalar meson states. In this formalism, it is found that there is no mixing between two quarkonium states with different quark masses t...
Annihilation of Self and Subsistence in God are of the most significant common themes in both first and second Islamic theosophical traditions, which have been investigated by two different approaches. The first theosophy believed that annihilation was cleansing from any evil deeds and subsistence was achieving good deeds. In this tradition, Human and God had two essences different from one ano...
There is a few mystical works in Persian literature, the authors of which have mentioned into them the foundations of mysticism definitely. These terms can be inferred from mystical and sūfical works: “purification, devotion, mystical experience, annihilation, conservation of essence, mystical behaviour, rapture, love, poverty, mystical state, unity of existence, knowledge, Sheykh guidance, ...
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