According to the mage's research, there are three types of radiation emitted by radioactive substances, the first type of rays, which are mainly composed of the nuclei of the element Sirius, the second type of rays, which are composed of high-speed electron flows, and the third type of rays, which are electromagnetic waves with extremely short wavelengths.

At the same time, after analyzing the radioactive material, the mages found that after being irradiated by these three types of rays, the matter may also release different rays, and it can be inferred from the principle of photoelectric effect that these rays with energy transfer energy to matter, and different particles in the substance get the corresponding energy and escape, forming such rays.

What Reiner needs is this radiation from other high-energy rays.

"First of all, in order to prove the hypothesis, we need the nucleus of an element with a lower relative mass of the element for ease of observation, for which I think we can use the Berlilin element for experiments."

The ordinal number of the Berlilin element in the periodic table is 4, the average relative element mass is 9, and the nuclear charge number is 4, which is a fairly high ranking element, this element was first found in emerald, and so far the application is only synthetic chloratospite.

"Berylin elementals?"

Reinhardt first thought of this element, mainly because recently the mages of the mechanical gear union were looking for some alloys with special properties to cope with the growing demand, and they tried to add various elements to the metal in different proportions, and obtained many alloys with unique properties, among which the Berylin element was added to the bronze to obtain the green bronze.

This green bronze has better mechanical properties than steel, and at the same time, it has good electrical conductivity, which is quite suitable for use as a key part of some precision equipment.

Therefore, when Reiner mentioned this element, Reinhardt immediately had a certain impression.

"Why don't we go to an open place and experiment?"

Reiner said, gesturing to the rooftop of the council chamber.

Several mages immediately stepped onto the rooftop, where they had a wide view of the ruins of the ruins in the distance, and Elliot's sky was blue again, but most of the soil had been eroded and rotted by magic, and only the nightmare thorns planted by Lord Reinhardt grew tenaciously in this soil.

Reiner was soon equipped with the equipment needed for his experiments, a magic circle capable of producing radioactive rays, and a metal plate of the Berlilin element used to receive the rays.

A high-level mage of the high-energy first-class ray generation circle could be driven, and Reiner asked Newington to manipulate and create a stream of first-class rays, which was shot at the metal plate of the Burylin element.

The first type of ray is very weak in penetration, and cannot even penetrate the skin of humans, but because it is the nucleus of the Cyrios element, it has an extremely strong ionization effect, and the ray has just hit the metal plate of the Berlilin element, and it is able to capture another ray radiated from the metal plate of the Berylin element.

Reiner hurriedly began verifying the properties of this new ray.

Soon, they discovered that the radiation released from the Berylin element was not the first type of ray in the first place.

The penetrating power of this ray is extremely strong, far from being matched by the first type of ray, and at the same time, this ray has extremely high energy, which greatly exceeds the ordinary radioactive ray, and requires an extremely strong magical barrier to completely block it.

"Extremely penetrating, is it a third type of ray?"

Lord Alberton asked, looking at the metal plate that had been exposed to the radiation, which seemed to hide a microscopic mystery.

"Let's do the math."

Reiner said as he quickly projected a complex formula, and he made various measurements of the rays obtained by the metal plate of the Berlilin element through the illumination of the first type of ray, and obtained the energy carried by it, and after calculating and comparing them, they found that the energy of this type of ray was far greater than that of the third type of ray.

"This value is impossible, according to the nature of electromagnetic waves, it is too difficult to achieve such energy."

Newington quickly sensed the contradiction, and he studied electromagnetic waves thoroughly, and naturally knew the limits of the third type of rays.

But this does not fully prove the existence of the neutron that Reiner said, they have to measure the mass of the particles that make up this ray.

However, Reiner was in no hurry to do so, and he took out another experimental object, paraffin.

This ordinary item is stable in nature and can be found in any alchemy workshop, Master Hohenheim frowned slightly, not knowing what Reiner wanted to do.

"We can shine this ray at the paraffin, and since the ray has such high energy, we may be able to cause the paraffin wax to radiate as well."

As he spoke, Reiner shone the radiation released from the Berylin metal onto the paraffin.

Through the extremely accurate detection array, the mages could clearly see that the radiation produced by the Berylin metal also caused the paraffin wax to radiate, and Reiner captured the rays in it, and it was obvious that this ray would be deflected in the electric field, which was charged particles!

Several mages quickly began to calculate, and it didn't take long to get the particles that made up the ray.

"This particle has a positive charge of one unit, and the relative elemental mass is the same as that of an atom of the Hydra element, which is a proton!"

Saxony had already subconsciously accepted Reiner's statement, and he exclaimed, if proton rays can be excited from paraffin, a substance that is not naturally radioactive, then the rays emitted by the Berylin element should have a higher energy than previously thought.

David immediately began to calculate, and it didn't take long for him to realize that this ray had far more energy than the third type of ray could have, it was a completely new type of ray!

Rays of the fourth type.

Extremely penetrating and extremely high in energy, it is conceivable that this ray is devastating to living beings, it can easily penetrate most of the barriers, destroying the tissues and cells of living beings, and the effect is extremely strong.

These thoughts flashed through his thoughts, and Reinhardt quickly calculated that through the speed of the protons released from the paraffin, Reinhardt was able to reflect the mass of the particles in the rays radiated by the Berylin element, and the result was obtained after a few minutes, as if lightning flashed through his head.

Because according to his calculations, the mass of this particle is almost the same as that of a proton.

This is one of the two particles that make up the nucleus of an atom predicted by Reiner, the neutron.

The nucleus is made up of positively charged protons combined with electrically neutral neutrons, as evidenced by a series of experiments.

After being verified, Reiner's initial hypothesis had to attract people's attention: Is there a special force that causes protons and neutrons to combine into atomic nuclei?