ANSWER:
The particle cannot leave out a spinning nucleus from the radial trajectory shown in fig. 7, according to the current nuclear models of Nuclear Physics.
According to current Nuclear Physics, the particle must leave out the spinning nucleus taking a tangential trajectory, as shown in fig. 6
However, the experiments showed that the alpha particle 2He4 leaves out the uranium nucleus 92U238 from a radial direction.
Gamow foolish theory
The 92U238 has a Coulomb barrier of 8,8MeV.
But 2He4 leaves out the nucleus is an energy of 4,2MeV
Gamow proposed a theory considering the tunnel effect so that to explain how 2He4 crosses the Coulomb barrier.
One of the premises in Gamow theory is the following:
the 2He4 leaves out the 92U through a radial trajectory.
Such an assumption, obviously, makes no sense. The 2He4 would have to leave ou the 92U by taking a tangential trajectory, according to current Nuclear Physics.
But Gamow theory has other absurd assumption.
Look at his equation:
He had assumed that N = V/2r’ is the number of endeavors trying to escape from the nucleus, supposing that v is the speed of 2He4 into a nucleus with radius r’.
He also knew that N = V / 2r’ is not a good estimate. But this expression changes very slowly face to the quickly variation of the exponential.
Thus, Gamow assumption is that the equation below is an estimate with good accuracy.
From the theory of potential barrier, the speed v is responsible for its perforation. (NOTE: as in the alpha-decay the particle emitted is the 2He4, then, no matter what can be the source of the decay, the mass of the particle emitted is always the same). The perforation of the barrier is achieved thanks to the kinetic energy, and thereby V2 has a fundamental participation in the Gamow’s interpretation. So, by the theory of potential barrier, the succeed in perforation depends on the numbers of attempts, N= V / 2r’ . But in the Gamow expression for tax R , the number of attempts can be despised, because it is inexpressive face to the exponential.
Gamow’s paradox: although the success of the enterprise depends on the numbers of attempts, according to his theory the attempts are not the most important cause that offers to the enterprise the possibility of success... Gamow has tried to explain a paradox by the introduction of another paradox...
The situation seems like this: suppose that we want to reach several objectives. We can get them only if we make many endeavors trying to get ours objectives, and the probability of getting each success depends on how many attempts we do. But after many attempts, we realize that the quantity of endeavors has no influence in the results. By consequence, we can abandon trying any endeavor. And although we have stoped to do any endeavor, we continue getting ours objectives and having success, without any attempt...
Other question is the following: we could expect that 2He4 could cross a barrier 50% or in maximum 60% higher than its 4,2MeV.
So, the 2He4 would be able to cross a barrier with maximum 6,7MeV.
But it crosses a barrier with 8,8MeV !!!! ,
higher than 100% of 4,2MeV !!!
CONCLUSION:
Gamow theory is not satisfactory to explain how the 2He4 leaves out the 92U nucleus.
So, actually there is not a satisfactory theory to explain how the 2He4 succeeds to cross the 8,8MeV of 92U Coulomb barrier.
And therefore there no exist, in Nuclear Physics, a satisfactory explanation for the alfa decay of 92U238.
Then let's think the meaning of this faillure of Nuclear Physics concerning cold fusion.
The higher critique against cold fusion is the question: how can a particle with small kinetic energy to cross the Coulomb barrier of a nucleus, in order to occur cold fusion ?
That's why the theorists consider, taking Nuclear Physics as a referee, that cold fusion is impossible.
Neverthelless, we have to ask to ourselves: but Nuclear Physics did not explain satisfactorily the mechanism of tunnel effect, as we realize by considering that Gamow theory is not satisfactory to explain alpha-decay of 92U238
Therefore, the theorists cannot take the Coulomb barrier as a definitive impossibility for the occurrence of cold fusion, since they do not know yet how the Coulomb barrier actually is crossed in the tunnel effect.