lawson criterion

简明释义

劳逊判据

英英释义

例句

1.Understanding the lawson criterion is essential for physicists involved in plasma research.

理解lawson criterion对于参与等离子体研究的物理学家至关重要。

2.The lawson criterion helps determine the conditions under which fusion can occur efficiently.

lawson criterion有助于确定有效发生聚变的条件。

3.In a recent seminar, experts discussed the implications of the lawson criterion on future energy sources.

在最近的研讨会上，专家们讨论了lawson criterion对未来能源来源的影响。

4.Researchers are working hard to achieve the lawson criterion for sustainable energy production.

研究人员正在努力实现可持续能源生产的lawson criterion。

5.The success of nuclear fusion experiments often depends on meeting the lawson criterion.

核聚变实验的成功往往取决于满足lawson criterion。

作文

The pursuit of clean and sustainable energy sources has become a paramount goal for scientists and engineers around the globe. Among the various methods being explored, nuclear fusion stands out as one of the most promising options. However, achieving practical nuclear fusion requires overcoming significant scientific and engineering challenges. One of the key concepts in this field is the lawson criterion, which provides a fundamental guideline for determining the feasibility of fusion reactions. The lawson criterion (劳森标准) defines the necessary conditions under which a fusion plasma can achieve a net positive energy output, meaning that the energy produced by the fusion reactions exceeds the energy required to sustain those reactions.To understand the lawson criterion, it is essential to grasp its components. The criterion is primarily defined in terms of three critical parameters: temperature, density, and confinement time. In simple terms, for a fusion reaction to be successful, the plasma must be sufficiently hot, dense, and well-confined. High temperatures are necessary to provide the kinetic energy needed for the nuclei to overcome their electrostatic repulsion and collide with enough force to fuse. Density refers to the number of particles in a given volume of plasma; higher densities increase the likelihood of collisions between particles. Finally, confinement time is the duration that the plasma can maintain its state before losing energy through radiation or other processes.The interplay of these three factors is crucial. According to the lawson criterion, there exists a threshold where the product of the density and confinement time must reach a certain value at a specific temperature for fusion to occur efficiently. This relationship is often depicted in graphs that illustrate the various operational regimes of different fusion devices, such as tokamaks and inertial confinement systems.In practice, achieving the lawson criterion is incredibly challenging. Current experimental reactors like ITER (International Thermonuclear Experimental Reactor) aim to reach the necessary conditions outlined by this criterion but face numerous technical hurdles. The need for advanced materials that can withstand extreme temperatures and pressures, as well as effective magnetic confinement systems, are just a few of the obstacles researchers must overcome.Despite these challenges, the potential rewards of achieving sustained nuclear fusion are immense. If scientists can successfully meet the lawson criterion, we could unlock a virtually limitless source of energy that produces minimal waste and no greenhouse gas emissions. This would significantly mitigate the effects of climate change and reduce our reliance on fossil fuels.In conclusion, the lawson criterion serves as a critical benchmark in the quest for nuclear fusion energy. Understanding its principles is essential for researchers working in this field. As technology advances and our understanding of plasma physics deepens, the hope remains that we will one day harness the power of fusion to provide a clean and sustainable energy future. The journey towards achieving the lawson criterion is fraught with challenges, but the potential benefits make it a worthy pursuit.

追求清洁和可持续能源来源已成为全球科学家和工程师的首要目标。在探索的各种方法中，核聚变脱颖而出，成为最有前途的选择之一。然而，实现实用的核聚变需要克服重大的科学和工程挑战。在这个领域，一个关键概念是劳森标准，它为确定聚变反应的可行性提供了基本指导。劳森标准定义了聚变等离子体能够实现净正能量输出所需的必要条件，这意味着聚变反应产生的能量超过维持这些反应所需的能量。要理解劳森标准，必须掌握其组成部分。该标准主要通过三个关键参数来定义：温度、密度和约束时间。简单来说，要使聚变反应成功，等离子体必须足够热、足够密集且良好约束。高温是必要的，以提供足够的动能，使原子核克服其静电排斥力，并以足够的力量碰撞融合。密度是指在给定体积的等离子体中粒子的数量；更高的密度增加了粒子之间碰撞的可能性。最后，约束时间是等离子体在失去能量之前能够维持其状态的持续时间，通过辐射或其他过程。这三个因素的相互作用至关重要。根据劳森标准，存在一个阈值，其中密度和约束时间的乘积必须在特定温度下达到一定值，以便聚变有效发生。这种关系通常以图表的形式展示，说明不同聚变装置（如托卡马克和惯性约束系统）的各种操作区域。在实践中，实现劳森标准是极具挑战性的。目前的实验反应堆，如国际热核聚变实验反应堆（ITER），旨在达到该标准所概述的必要条件，但面临许多技术障碍。需要耐受极端温度和压力的先进材料，以及有效的磁约束系统，仅仅是研究人员必须克服的一些障碍。尽管面临这些挑战，实现持续核聚变的潜在回报是巨大的。如果科学家能够成功满足劳森标准，我们就可以解锁一种几乎无限的能源来源，这种能源产生的废物极少且没有温室气体排放。这将显著减轻气候变化的影响，并减少我们对化石燃料的依赖。总之，劳森标准作为核聚变能源追求中的关键基准。理解其原则对于在这一领域工作的研究人员至关重要。随着技术的进步和我们对等离子体物理学的理解加深，希望有一天我们能够利用聚变的力量，为未来提供清洁和可持续的能源。实现劳森标准的旅程充满挑战，但潜在的好处使其成为值得追求的目标。