What are the two key technical indexes of cyclotron, and what are their relations with the types of isotope production?

The core technical indexes of cyclotron are energy and beam intensity. Energy refers to the ability of an accelerator to accelerate particles, which is an important index to measure the performance of an accelerator. Beam intensity refers to the intensity of particle beam in accelerator, that is, the number of particles per unit area. The energy and beam intensity of the accelerator determine its influence on isotope production.

The influence of energy and beam intensity on isotope yield is complex, which depends on the specific nuclear reaction and experimental conditions. Generally speaking, increasing the energy and beam intensity of the accelerator can increase the isotope yield. Higher energy and beam intensity provide higher energy density, making nuclear reactions easier to occur. In addition, higher energy and beam intensity can also increase the cross section of the reaction channel and improve the isotope yield.

However, not all nuclear reactions increase with the increase of energy and beam intensity. The cross section of some nuclear reactions will peak with the increase of energy and then decrease, which is called "* * * vibration". When the energy of the accelerator approaches the vibration energy, the isotope production may decrease. In addition, the increase of beam intensity may weaken the influence of binding effect, thus reducing the output.

To sum up, energy and beam intensity have complicated relations with isotope yield, which need specific nuclear reaction and experimental conditions to determine.