Positron Emission of Carbon-11

11C → 11B + e+ + νe

개요

Carbon-11 undergoes positron emission to become boron-11 with a short half-life of 20.4 minutes. C-11 can be incorporated into virtually any organic molecule for PET imaging because carbon is present in all organic compounds. Its short half-life limits use to facilities with on-site cyclotrons.

참여 물질

역할 물질 계수 상태
반응물 Carbon C 1 (s)
생성물 Boron B 1 (s)

일상 속 예시

C-11 labeled methionine PET scans help distinguish brain tumor recurrence from radiation necrosis after cancer treatment.

산업적 중요성

C-11 PET 추적자는 신경학 연구, 종양학, 심장학에 사용됩니다. 사이클로트론 생산에는 전용 방사성의약품 시설이 필요합니다.

성질

유형
Nuclear
가역 반응
아니오
에너지
발열
ΔH
-96000000.0 kJ/mol

관련 반응

Alpha Decay of Radium-226 Alpha Decay of Radon-222 Alpha Decay of Thorium-232 Neutron Capture by Uranium-238 Beta Decay of Iodine-131 Beta Decay of Strontium-90 Alpha Decay of Polonium-210 Americium-241 Alpha Decay Beta Decay of Cobalt-60 Electron Capture by Beryllium-7

Frequently Asked Questions

What is the equation for Positron Emission of Carbon-11?
The balanced equation is: ¹¹C → ¹¹B + e⁺ + νₑ.
What type of reaction is Positron Emission of Carbon-11?
Positron Emission of Carbon-11 is a nuclear reaction.
Is Positron Emission of Carbon-11 exothermic or endothermic?
Positron Emission of Carbon-11 is exothermic (releases energy). The enthalpy change (ΔH) is -96000000.0 kJ/mol.