4437
Based on the captured images , the strong radiative emission indicates that the ejected plasma was at high temperature at least 6000 K. As the current increases higher-temperature plasma jets were expected , which would lead to a larger plasma volume in the absence of constriction .
 images, emission, plasma, temperature, As, plasma, lead, plasma
Please list all entity words in the text that fit the category. Output format is "word1, 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} 
Answer:
 images, emission, plasma, temperature, As, plasma, lead, plasma