If we ascribe the ejection of the proton to a Compton recoil from a quantum of 52 x 106 electron volts, then the nitrogen recoil atom arising by a similar process should have an energy not greater than about 400,000 volts, should produce not more than about 10,000 ions, and have a range in the air at N.T.P. of about 1-3mm. Actually, some of the recoil atoms in nitrogen produce at least 30,000 ions. In collaboration with Dr. Feather, I have observed the recoil atoms in an expansion chamber, and their range, estimated visually, was sometimes as much as 3mm. at N.T.P.These results, and others I have obtained in the course of the work, are very difficult to explain on the assumption that the radiation from beryllium is a quantum radiation, if energy and momentum are to be conserved in the collisions. The difficulties disappear, however, if it be assumed that the radiation consists of particles of mass 1 and charge 0, or neutrons. The capture of the a-particle by the Be9 nucleus may be supposed to result in the formation of a C12 nucleus and the emission of the neutron. From the energy relations of this process the velocity of the neutron emitted in the forward direction may well be about 3 x 109 cm. per sec. The collisions of this neutron with the atoms through which it passes give rise to the recoil atoms, and the observed energies of the recoil atoms are in fair agreement with this view. Moreover, I have observed that the protons ejected from hydrogen by the radiation emitted in the opposite direction to that of the exciting a-particle appear to have a much smaller range than those ejected by the forward radiation.This again receives a simple explanation on the neutron hypothesis.
More than two dozen kids lined a low railing around the gazebo. They were all tied to it by a rope leash that gave them no more than a few feet of movement. Neck to rail, like tethered horses. Each of the kids was weighed down by a concrete block that encased their hands. Their eyes were hollow, their cheeks caved in.Astrid used a word that Sam had never imagined coming from her.“Nice language,” Drake said with a smirk. “And in front of the Pe-tard, too.”A cafeteria tray had been placed in front of each of the prisoners. It must have been a very recent delivery because some were still licking their trays, hunched over, faces down, tongues out, licking like dogs.“It’s the circle of freaks,” Drake said proudly, waving a hand like a showman.In a crusty old wheelbarrow to one side, three kids were using a short-handled shovel to mix cement. It made a heavy sloshing sound. They dumped a shovelful of gravel into the mix and stirred it like lumpy gravy.“Oh, no,” Lana said, backing away, but one of the Coates kids smashed her behind the knee with his baseball bat, and she crumpled.“Gotta do something with unhelpful freaks,” Drake said. “Can’t have you people running around loose.” He must have seen Sam start to react because he stuck his gun against Astrid’s head. “Your call, Sam. You so much as flinch and we’ll get to see what a genius brain really looks like.”“Hey, I got no powers, man,” Quinn said.“This is sick, Drake. Like you’re sick,” Astrid said. “I can’t even reason with you because you’re just too damaged, too hopelessly messed up.”“Shut up.