① Ko te papamuri BIN (Whakaahua Papamuri o Punoa) ka warewarehia te hangarau
② MCA multispectrum tātaritanga, āhuatanga SIGMA hātepe tatauranga
③ Taumahi NORM (40K) Te wehewehe tere i waenga i nga karihi horihori me te taiao (e.g40K,232T）
④ Te mahi ahukahuka nuclide (me te rangahau konutai iodide / ka taea)
⑤ Ma te whakakotahi i te kaitirotiro konutai iodide me te MCA multichannel pūngao spectrometer tātari ka taea te wehe tika i waenga i nga nuclides hauora, nuclides ahumahi, me nga radionuclides taiao.
| karihi maori | 40K,226Ra,232Th |
| Ahumahi karihi | 241ahau,137Cs,60Co,57Co,22Na,133Ba,54Mn,88Y |
| Nuclides rongoa | 131ahau,201Tl,203Hg,18F,99mTc,99Mo,192Ir |
| Nga rauemi karihi motuhake | 57Co,152Eu,238U |
⑥ Te tauira tere-tere (tere: 200ms)
| ingoa kaupapa | Nga korero tawhā |
| Nga momo kaitirotiro | Pereti scintillator kirihou + iti haruru photomultiplier ngongo |
| Rōrahi kaitirotiro | 5,10,15 hei whiriwhiri me te tirotiro rua (te tatau taunoa te tirotiro takirua) |
| Te reeti haere morahi | 106cps |
| awhe pūngao | 25keV~3MeV |
| tairongo | m5000cps / (Sv / h) (10 L, whanaunga137Cs） |
| Te rapunga i raro iho | Te kaha ki te kite i te radiation i runga ake i te papamuri o 5nSv / h |
| Ko te mea whiriwhiri, ko te ngongo neutron |
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| Ahukahuka dinnuclide kōwhiringa |
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1. Te kaha rapunga pateko (AB)
A. Te pai o te kitenga o te punaha tirotiro haere
| puna radioactive | Ko te kaha matuakeV | Te pai o te kitenga pateko | Te horopeta i te 1.5m / (nSv.h-1/MBq | |
| s-1/MBq | s-1/(nSv.h-1) | |||
| 241Am | 60 | ≥220 | ≥94 | 2.3 |
| 57Co | 122,136 | ≥840 | ≥90 | 9.3 |
| 137Cs | 662 | ≥960 | ≥23 | 42 |
| 60Co | 1173,1332 | ≥1800 | ≥11 | 160 |
| 133Ba | 3,181,302,356 | ≥1680 | ≥73 | 23 |
ringihia:
1. Ko te puna whakamatautau paerewa 252Cf neutron me te puna neutron kaha o 12000 / s (1 ± 20%) ka whakanohoia ki te waahi o te tohu tohutoro.
2. Ko te reeti tatau neutron ka tutuki te whakaritenga o te reeti tatau o> 100 (1 ± 20%) / s
Te pai o te kitenga o te punaha tirotiro mo te rarangi-B
| puna radioactive | Ko te kaha matuakeV | Te pai o te kitenga pateko | Te horopeta i te 1.5m / (nSv.h-1/MBq | |
| s-1/MBq | s-1/(nSv.h-1) | |||
| 241Am | 59.5 | ≥480 | ≥92 | 5.2 |
| 57Co | 122,136 | ≥2400 | ≥114 | 21 |
| 137Cs | 662 | ≥2640 | ≥28 | 95 |
| 60Co | 1173,1332 | ≥5760 | ≥16 | 360 |
| 133Ba | 3,181,302,356 | ≥4560 | ≥88 | 52 |
2. Te arokitenga
Pūnaha aro turuki hikoi me te punaha aro turuki mo te raina
Hīkoi: Te kimi tūponotanga f 90% tere v=1.2m/s
Mōkī Raina: te tirotiro tūponotanga f 90% tere v=1m / s
| puna radioactive | Te ngohe, te kounga ranei |
| 137Cs | 0.08MBq |
| 60Co | 0.02MBq |
| 241Am | 2.27MBq |
3. Ko te mahi aukati i te mahi a te kaitirotiro neutron
I te wa e whakaputahia ana e te puna 60Co te reeti horopeta i te pokapū ahuahanga o te mata o te neutron detector o te punaha aroturuki, nui ake i te 120 Sv / h, kaua te punaha aroturuki e whakaoho i te whakaoho neutron.
4. Reeti whakaoho teka: 0.01% (, neutron)
Ko te tūponotanga ka puta he whakaoho o te punaha rapu na nga matū reo irirangi kore, ehara ranei i te SNM
5. āhuatanga taumaha
A, no te he> 120 Sv / h te auau horopeta mata pūhohenga, ka mau tonu te pūnaha aroturuki i te āhua whakaoho me te hoki ki te āhua papamuri, me te wa tuku whakaoho he iti iho i te 60s.
6. Te riterite o te tairongo
I roto i te awhe o te waahi kitea
Hīkoi ± 25% Pōkai Raina ± 25%
Te tere o te tangi
I roto i te taiao pumau:
Whakamahia te puoro mokowhiti, 10000 nga wa, reeti whakaoho teka 1
Ki te kore e whakamahi i te pukoro noho, ka whakamahia te reeti whakaoho teka me te reeti hapa i roto i te 12h
γ Whakautu Irirangi
Kia 50 nga wa, kia 49 nga wa whakaoho
Karekau
Neke atu i te 100 v S / h, ka tukuna he whakaoho iraruke teitei ka tangohia i roto i te 1min i muri i te wehenga o te puna.
Pūoho neutron iraruraru
Karekau he whakaoho neutron ka puta ina tae te reeti horopeta o te γ-hihi ki te 100 Sv / h
Te awe o te papamuri
Ina he nui te huringa papamuri ki te puta he huringa nui i roto i te tūponotanga whakaoho, ka tukuna e te punaha aroturuki he tohu whakatupato
Ahukahuka nuclide
| karihi maori | 40K,226Ra,232Th |
| Ahumahi karihi | 241ahau,137Cs,60Co,57Co,22Na,133Ba,54Mn,88Y |
| Nuclides rongoa | 131ahau,201Tl,203Hg,18F,99mTc,99Mo,192Ir |
| Nga rauemi karihi motuhake | 57Co,152Eu,238U |
Tuhipoka: Ko te tautuhi nuclide me te kimi neutron he mea whiriwhiri, ehara i te punaha paerewa
Whakaaturanga 1. Te kete me te tirotiro iraruke hikoi
