2953
Neutron strain mapping of the metal powders and the additively manufactured materials resulted in a weak diffraction signal and peak widening effect .
 concept or principle: Neutron; material: metal powders; manufacturing process: additively manufactured; process characterization: diffraction
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: Neutron, metal powders, additively manufactured, diffraction 
Answer:
 concept or principle: Neutron; material: metal powders; manufacturing process: additively manufactured; process characterization: diffraction