Pinhole imaging of laser-produced thermonuclear alpha particles

We have built a pinhole camera for imaging the deuterium‐tritium (DT) burn region of laser‐driven implosions by spatially resolving the α particles. Kodak Pathe LR‐115 cellulose nitrate film was used as a detector with an 8‐mg/cm2 Ta filter. Initial results show that the α particles are produced in a region which is much smaller than the initial glass microsphere.