Stuglik Z, Michalik J, Stachowicz W, Ostrowski K, Zvara I, Dziedzic-Goclawska A
Institute of Nuclear Chemistry and Technology (INCT), Warszawa, Poland.
Appl Radiat Isot. 1994 Dec;45(12):1181-7. doi: 10.1016/0969-8043(94)90034-5.
Bovine compact bone powder was irradiated with alpha-particles of 241Am, 12C6+ and 35Mg12+ ion beams, then examined by the e.p.r. spectroscopy. The stable e.p.r. signal found is of the same characteristic as that observed in gamma-irradiated bone (g perpendicular = 2.0017, g parallel = 1.9973, delta Hpp = 0.85 mT). Thus, the structure of radiation induced paramagnetic center in bone does not depend on the LET of radiation used. The radiolytic yields of the formation of stable paramagnetic centres in bone powder irradiated with gamma-rays are G gamma = 0.08 +/- 0.01 while with 12C6+ ion beams roughly about Gc = 0.02, respectively.
用241Am、12C6+和35Mg12+离子束的α粒子辐照牛密质骨粉，然后通过电子顺磁共振光谱进行检测。所发现的稳定电子顺磁共振信号与在γ辐照骨中观察到的信号具有相同的特征（g垂直 = 2.0017，g平行 = 1.9973，δHpp = 0.85 mT）。因此，骨中辐射诱导顺磁中心的结构不取决于所用辐射的传能线密度。用γ射线辐照骨粉时稳定顺磁中心形成的辐射分解产额为Gγ = 0.08 ± 0.01，而用12C6+离子束辐照时大约为Gc = 0.02。
