Patent ID: 8195039

Claim:
An iodine delivery system comprising: an iodine vessel configured to receive solid iodine supplied by an iodine fill source, wherein the iodine vessel is heated to produce iodine gas; and a valve system configured to control the flow of iodine gas through the iodine delivery system and into a process chamber, wherein the iodine gas is transported without the aid of a carrier gas; a control system configured to monitor and control the operating conditions in the iodine vessel and maintain a positive pressure in the iodine vessel relative to the process chamber; a passageway cylinder surrounding the iodine vessel, and wherein the iodine vessel is suspended away from the passageway cylinder; and an iodine sensor configured to detect the presence of an iodine leak within the area between the passageway cylinder and the iodine vessel; wherein a coolant, in response to detection of an iodine leak, is passed into the area between the passageway cylinder and the iodine vessel to facilitate cooling of the iodine into a solid state and stopping the iodine leak.