Page 210 - Radiation Safety
P. 210

cosmic                          X-rays


                                                    
                                                      4 He                           neutron
                                                    2                                                                                 -rays


                                                                   
                                                                                   Electron



                                                            -                      +
                                                     (negatron)               (positron)



                                                                                                                                                                               46
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