Are there any radioactive elements which only emit beta rays?

If not, are there any radioactive elements that only emit beta and gamma rays?

  • $\begingroup$ Why, many. $^{14}\rm C$ will do. $\endgroup$ – Ivan Neretin Dec 6 '18 at 7:20
  • $\begingroup$ And how rapidly does it emit electrons? Also, it would be appreciated if you could give a comprehensive list of all such isotopes. $\endgroup$ – Abdul Moiz Qureshi Dec 6 '18 at 7:44
  • $\begingroup$ Have you tried searching for "list of pure beta emitters"? $\endgroup$ – Ian Bush Dec 6 '18 at 7:51
  • $\begingroup$ @AbdulMoizQureshi "And how rapidly does it emit electrons?" – Do you know the concept of activity, decay constant, and half life? $\endgroup$ – Loong Dec 6 '18 at 8:23
  • $\begingroup$ Loong, no, only halflife. I also know that the more the halflife, the less tge radiation. $\endgroup$ – Abdul Moiz Qureshi Dec 6 '18 at 10:55

In the long list of nuclides that are considered for radiation protection (taken from ICRP, 2008. Nuclear Decay Data for Dosimetric Calculations. ICRP Publication 107. Ann. ICRP 38 (3)), we can find the following pure beta emitters and their half-lives:

H-3 (12.32 a)
Be-10 (1.51E+6 a)
C-14 (5.70E+3 a)
Si-32 (132 a)
P-32 (14.263 d)
P-33 (25.34 d)
S-35 (87.51 d)
Ar-39 (269 a)
Ar-42 (32.9 a)
Fe-60 (1.5E+6 a)
Ni-63 (100.1 a)
Ni-66 (54.6 h)
Se-79 (2.95E+5 a)
Rb-87 (4.923E+10 a)
Sr-90 (28.79 a)
Zr-93 (1.53E+6 a)
Ru-106 (373.59 d)
Pd-107 (6.5E+6 a)
Cd-113 (7.7E+15 a)
Cd-118 (50.3 min)
In-115 (4.41E+14 a)
Sn-121 (27.03 h)
Cs-135 (2.3E+6 a)
Re-187 (4.12E+10 a)
Pt-202 (44 h)
Pb-209 (3.253 h)
Bi-212n (7.0 min)
Cf-255 (85 min)

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  • $\begingroup$ I'd upvote, but don't have enough reputation. Which one of those has a high rate of beta particle emission? $\endgroup$ – Abdul Moiz Qureshi Dec 6 '18 at 10:57
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    $\begingroup$ @AbdulMoizQureshi - you are given the link to the reference in the answer. Perhaps you should look through that to find the information you want. $\endgroup$ – Jon Custer Dec 6 '18 at 13:49

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