相关实验视频
Updated: Jan 16, 2026

08:34
Cryogenic Liquid Jets for High Repetition Rate Discovery Science
Published on: May 9, 2020
3.4K
需要多少次交互才能修改喷气式飞机?
Chiara Le Roux1, José Guilherme Milhano2,3, Korinna Zapp1
1Department of Physics, Lund University, Sölvegatan 14A, S22362 Lund, Sweden.
概括
在p+Pb系统中的高能粒子碰撞显示出近于单位的核修饰因子 (RAA) 旁边的亚齐木斯特异性 (v2) . 这项研究使用珠宝喷气火模型来解释这一现象,发现v2和RAA是相关的.
科学领域:
- 高能核物理 高能核物理
- 粒子物理学的粒子物理学.
- 量子色态动力学 是一个量子色态动力学.
背景情况:
- 在质子- (p+Pb) 碰撞中,研究高横运动量 (pT) 粒子的亚齐木斯特异性 (v2).
- 在小系统中,解决相当大的v2和接近统一的核修饰因子 (RAA) 之间的明显矛盾.
- 了解夸克-子等离子体 (QGP) 在小型碰撞系统中的作用.
研究的目的:
- 解决同时观察高pT粒子异性质 (v2) 和RAA~1在p+Pb碰撞中的难题.
- 探索喷气火模型 (Jewel) 以在小系统中解释这些测量.
- 为了建立v2,RAA和中等修改强度之间的关系.
主要方法:
- 使用珠宝喷气火模型模拟p+Pb碰撞.
- 用每部分散射数和德拜质量的平方乘以媒介变异强度的特征.
- 使用一个简单的介质模型来研究v2和RAA的相互作用.
主要成果:
- 对于小型系统和中度修改,v2和RAA大约与特征的中等强度相匹配.
- 要产生可测量的喷气火效应,需要大量的部分散射.
- 与观察到的v2一致的RAA值可以属于实验不确定性.
结论:
- 该研究表明,p+Pb碰撞中测量v2和RAA之间目前没有矛盾.
- 结果表明v2和RAA是内在相关的,并且与介质修改一起扩展.
- 观察到偏离缩放,特别是由于不弹性能量损失,突出显示了复杂的介质相互作用.
相关概念视频
Free Jet
548
Free jets describe the flow of liquid exiting a reservoir through an opening into the atmosphere without resistance. The velocity (v) of the liquid jet is derived using Bernoulli's principle and expressed as:
548
Turbulent Flow: Problem Solving
385
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
385
Plane Potential Flows
877
Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
Uniform...
Uniform...
877
Radiation Pressure: Problem Solving
796
The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force...
The average value of the rate of momentum transfer divided by the absorbing area represents the average force...
796
Equilibrium Conditions for a Particle
2.2K
When an object is in equilibrium, it is either at rest or moving with a constant velocity. There are two types of equilibrium: static and dynamic. Static equilibrium occurs when an object is at rest, while dynamic equilibrium occurs when an object is moving with a constant velocity. In both cases, there must be a balance of forces acting on the object.
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
2.2K
Problem Solving: Volume
7
The volume of a fuel tank mounted on the wing of a jet aircraft can be modeled using the concept of solids of revolution. In this case, the tank is formed by rotating a two-dimensional region, defined by a mathematical function, about the x-axis. The region extends along the axis from zero to two meters, and the resulting three-dimensional shape is symmetric about the axis of rotation. Because the boundary curve lies directly against the axis, the disk method is an appropriate technique for...
7

