Method for producing carbon nanostructure and apparatus for producing carbon nanostructure

An apparatus for producing a carbon nanostructure with which a carbon nanostructure is produced between a base body and a separable body while the separable body is relatively moved away from the base body, the base body including a carburizable metal that is a principal constituent, the separable body including a carburizable metal that is a principal constituent, the separable body being joined to or in contact with the base body in a linear or strip-like shape, the apparatus comprising:

• a separator that hermetically isolates a portion of the base body at which the base body and the separable body are joined to or in contact with each other from the other portion of the base body;
• a carburizing gas feed mechanism that feeds a carburizing gas to the portion of the base body at which the base body and the separable body are joined to or in contact with each other, the portion being isolated by the separator;
• an oxidizing gas feed mechanism that feeds an oxidizing gas to the other portion of the base body, the other portion being isolated by the separator;
• a heating mechanism that heats the portion of the base body at which the base body and the separable body are joined to or in contact with each other;
• and
• a separation mechanism that relatively moves the separable body away from the base body.