نتایج جستجو برای: transverse measurement
تعداد نتایج: 483243 فیلتر نتایج به سال:
We disclose a method to obtain the transverse light-shift along probe light of single-axis alkali metal-noble gas co-magnetometer. The relationship between compensating field and is deduced through steady-state solution Bloch equations. variety intensity used residual magnetic field, step modulation tests are applied acquire total spin-relaxation rate electron spins self-compensation point. Fin...
One of the challenges in relativistic heavy ion collisions is to measure and study the large number of particles produced in such reactions. Measurement of particle density and transverse energy density in rapidity is a convenient way to describe particle production in heavy ion collisions. The pseudorapidity density (dN/dη) and transverse energy pseudorapidity density (dET /dη) at mid-rapidity...
We present a measurement of the W boson mass using data collected with the CDF detector during the 1994-95 collider run at the Fermilab Tevatron. A fit to the transverse mass spectrum of a sample of 30,115 W → eν events recorded in an integrated luminosity of 84 pb−1 gives a mass MW = 80.473 ± 0.065(stat.) ± 0.092(syst.) GeV/c2. A fit to the transverse mass spectrum of a sample of 14,740 W → μν...
In 1945, Dirac attempted to develop a “formal probability” distribution to describe quantum operators in terms of two noncommuting variables, such as position x and momentum p [Rev. Mod. Phys. 17, 195 (1945)]. The resulting quasiprobability distribution is a complete representation of the quantum state and can be observed directly in experiments. We measure Dirac’s distribution for the quantum ...
Long (σz ∼ 500 μm) SLAC electron and positron bunches sent into dense plasmas (ne = 0.6 − 2.3 × 10 cm−3) are subject to a transverse two-stream instability called the self-modulation instability or SMI. We use numerical simulations to show that when the SMI saturates, the wakefield excitation reaches the nonlinear regime of the plasma wakefield accelerator (PWFA). We show that defocused particl...
Since ancient Greek times marble has been used for decoration and for sculpture. In this paper, we have analyzed marble samples, which were selected according to their porosity and the proportion of CaO values, with ultrasonic velocity measurement methods. Elastic modulus was evaluated from longitudinal and transverse velocity of ultrasonic wave propagation in marble samples. Our results indica...
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