Our ionization energy is going to be equal to the incident energy coming in, minus the kinetic energy of the electron.

我们的电离能将等于,入射能量，减去电子的动能。

麻省理工公开课 - 化学原理课程节选

And I am going to let this arrow somehow indicate the value of the incident energy.

我将用这个箭头,来揭示,入射能量的值。

麻省理工公开课 - 固态化学导论课程节选

So, let's take a look at the different kinetic energies that would be observed in a spectrum for neon where we had this incident energy here.

那么，让我们来看一下,在已知入射能量的情况下,可以在氖光谱中观测到哪些不同的动能。

麻省理工公开课 - 化学原理课程节选

Now, if this incident energy is great enough it will take an electron out of the ground state and promote it.

现在，如果入射能足够的话,它会将一个电子从基态中释放出来,并且加速它。

麻省理工公开课 - 固态化学导论课程节选

So what we're saying here is the incident energy, so the energy coming in, is just equal to the minimum energy that's required to eject an electron.

这里我们来讨论一下，入射能量正好等于,发射出一个电子所需要的最低能量的情况。

麻省理工公开课 - 化学原理课程节选

Change the voltage, I change the incident energy.

改变电压，我改变入射能量。

麻省理工公开课 - 固态化学导论课程节选

Because here what we have is some atom that we're studying, in the case, it's going to be a gas, and we hit it with a photon that has some incident energy.

因为这里我们要研究的是一些原子,在这种情况下，一般是气态的，然后我们令一个,具有一定初始能量的光子打上去。

麻省理工公开课 - 化学原理课程节选

So we can use an equation to relate the incident energy and the kinetic energy to the ionization energy, or the energy that's required to eject an electron.

因此我们可以用一个公式将入射能量,与动能和电离能，就是发射出一个电子所需要的能量关联起来。

麻省理工公开课 - 化学原理课程节选

The first that we need to know the energy of the photon that's incident on our gaseous atom.

首先，我们需要知道,入射到气体原子的光子的能量。

麻省理工公开课 - 化学原理课程节选

Let this represent the total energy of the incident electron.

让这个来表示入射电子的,总能量。

麻省理工公开课 - 固态化学导论课程节选

So, now we can talk about it in different terms, Ei for example, talking about e sub i, which is the incident energy or the energy of the light that comes in, or talking about work function here, and that's just another way to say threshold energy.

现在我们可以从不同的方面,来谈论它了，举例来说，它是入射能量或者进来的光的能量,或者谈论这里的功函数，它是另一种描述临界能量的方式。

麻省理工公开课 - 化学原理课程节选

Suppose the E incident is greater than the energy in the transition going from ground state n=2 What will happen?

假设入射能量远远大于,从基态向,转变的能量。，to，n，equals，two。,那会发生什么？

麻省理工公开课 - 固态化学导论课程节选

If I went on and told you what the different incident light was, and what the electrons were ejected with, and then you could look up the ionization energy for the particular different elements, you should be able to actually determine exactly which element it is, but just with the information given, we can only narrow it down to these choices here.

如果我继续告诉大家入射光源是什么，出射电子的动能是多少，那么你可以去查一查,以上各个元素的电离能，这样你就应该能确定,这个元素到底是哪个，但是只凭题目中的信息，我们只能把范围缩小至以上几种元素。

麻省理工公开课 - 化学原理课程节选