	US 11,795,056 B2
	Method for producing astatine
Atsushi Shinohara, Suita (JP); Atsushi Toyoshima, Suita (JP); Takashi Yoshimura, Suita (JP); and Akimitsu Kanda, Suita (JP)
Assigned to OSAKA UNIVERSITY, Suita (JP)
Appl. No. 16/770,403
Filed by OSAKA UNIVERSITY, Suita (JP)
PCT Filed Dec. 7, 2018, PCT No. PCT/JP2018/045068 § 371(c)(1), (2) Date Jun. 5, 2020, PCT Pub. No. WO2019/112034, PCT Pub. Date Jun. 13, 2019.
Claims priority of application No. 2017-235141 (JP), filed on Dec. 7, 2017.
Prior Publication US 2020/0290872 A1, Sep. 17, 2020
Int. Cl. C01B 7/00 (2006.01); G21G 1/00 (2006.01)

CPC C01B 7/00 (2013.01) [G21G 1/001 (2013.01); C01B 2210/0009 (2013.01); G21G 2001/0094 (2013.01)]

8 Claims

1. A method for producing astatine-211, comprising

a step of irradiating α ray to bismuth to produce astatine-211 in the bismuth, and

a step of distilling the bismuth that received α ray irradiation with a carrier gas comprising an inert gas, O₂and H₂O to separate and purify astatine-211, and dissolving the astatine-211 in a solution.