Yes, but the liquid fluoride thorium reactor does not get anywhere close to the temperature you need for a nuclear thermal rocket. It might get close to 1000 ℃,

Yes, but the liquid fluoride thorium reactor does not get anywhere close to the temperature you need for a nuclear thermal rocket. It might get close to 1000 ℃, but you need about 2200 ℃ to get the 900 seconds specific impulse that makes nuclear thermal rockets so appealing. At that temperature that liquid salt has long vaporized.