Ionization radiation-induced ammonia synthesis (IMAGE) Science China Press Caption (a) Conversion of nuclear energy into chemical energy remains to be developed. (b) γ-Ray radiation-induced ammonia synthesis from nitrogen and water. HVL: half-value layer. Credit ©Science China Press Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.