Diffraction Spectrometry, Fall 2001

Group I

A study of Hydrogen, Helium, Nitrogen, Neon in excitation was conducted. This data was collected using a rotating arm spectrograph. The spectrograph data was drawn in the first node diffraction pattern from both the left and the right of the centerline of the grating. An average of the data was collected. The resulting angle was used to calculate the frequency of the escaping gamma.

Materials-

1. Rotating arm spectrograph
   旋转臂光谱仪
2. Excitation rig and voltage rheostat
   激发装置和电压电位器
3. 600 mm^-1 grating
   600 mm -1 格栅
4. Gas element cathode tubes
   气体元素阴极管

Experimental errors- Experimental errors occurring during the data collection were as follows.

1. Fluorescent light leaking into separation causing illumination and filling voided spectra.
   荧光灯光泄漏到分离过程中造成照明和填补空谱
2. Although for each element one single observer was used. Separate observers were used for separate elements. Resulting in several observed spectra in disagreement.
   尽管每个元素只使用了一个观察者。不同元素使用不同的观察者。导致多个观测到的光谱相互矛盾。
3. A level was not used to install the spectrograph resulting in the grating separation at an angle.
   由于未使用电平来安装光谱仪，导致光栅在角度上分离。
4. Several spectra were blurry, toward the red-orange range in particular, making measurement estimations accuracy questionable.
   几种光谱模糊，尤其是在红橙色区域，使得测量估计的准确性存疑。