Mehlala ea Lipotso Tse Buang ka Mahlaseli a Mahlaseli a Gamma (γ)
Pendahuluan
Mahlasedi a Gamma (γ) ke mofuta oa mahlaseli a motlakase a nang le matla a phahameng haholo. Mahlasedi a Gamma a hlahisoa ke ho bola ha mahlaseli a kotsi a li-nuclei tsa athomo tse sa tsitsang. Mahlasedi a Gamma a ka boela a thehoa ka liketso tsa nyutlelie kapa lits'ebetso tse ling bokahohleng, joalo ka ts'ebetso ea letsatsi kapa linaleli. Lefatšeng la saense le theknoloji, ho utloisisa mahlaseli a gamma ho bohlokoa, haholo-holo masimong a bongaka ba nyutlelie le fisiks ea nyutlelie. Sehlooho sena se tla tšohla mathata a fapaneng a mehlala a amanang le mahlaseli a gamma 'me se a tšohle ka botlalo.
Matlotlo le Litšobotsi tsa Mahlaseli a Gamma
Pele re kena lipotsong tsa mohlala, a re hlahlobeng litšobotsi tse ling tsa bohlokoa tsa mahlaseli a gamma:
1. Matla a Phahameng: Mahlasedi a Gamma a na le matla a phahameng haholo ho feta mahlaseli a ultraviolet esita le mahlaseli a X. Sena se a dumella ho kenella dinthong tse teteaneng le tse teteaneng.
2. Ha e tjhajwe: Ho fapana le dikarolwana tsa alpha le beta, mahlaseli a gamma ha a na tjhaje ya motlakase mme ha a na boima ba ho phomola. Ka hona, masimo a motlakase le makenete ha a a ame.
3. Ho Kena Haholo: Mahlasedi a gamma a ka kenella mmeleng wa motho le dinthong tse ding tse tiileng. Ka hona, dithebe tse sebetsang hangata di etswa ka dintho tse teteaneng, tse boima tse kang loto kapa konkreite.
4. Litlamorao tsa Baeloji: Ho pepesehela mahlaseli a gamma ho ka senya lisele tsa baeloji le DNA, e leng se ka lebisang liphetohong tsa 'mele le mofetše. Ka hona, ho sebetsana ka thata le tšireletso hoa hlokahala ha ho sebetsoa le mehloli ea mahlaseli a gamma.
Kamora ho tseba litšobotsi tsa eona, a re boneng hore na re ka rarolla mathata a amanang le mahlaseli a gamma joang.
Mohlala oa Potso ea 1: Mahlaseli a Gamma ho Boleng ba Mahlaseli a Motlakase
Potso:
Karolo e ntšang mahlaseli a kotsi Cobalt-60 (Co-60) e bola ho ba Nickel-60 (Ni-60) ka ho ntša mahlaseli a gamma. Haeba halofo ea bophelo ba Cobalt-60 e le lilemo tse 5,27, ke liathomo tse kae tsa Cobalt-60 tse tla sala ka mor'a lilemo tse 10,54, haeba qalong ho ne ho e-na le mole e le 'ngoe ea Cobalt-60?
Puisano:
Ho bola ha mahlaseli a kotsi ho latela molao oa ho bola ha maqhubu a maholo o hlalosoang ke equation:
\[ N(t) = N_0 \cdot \left(\frac{1}{2}\right)^{\frac{t}{T_{1/2}}} \]
Di mana:
– \( N(t) \) = palo ea liathomo tse setseng ka mor'a nako \(t \),
– \( N_0 \) = palo ea pele ea liathomo,
– \( T_{1/2} \) = halofo ea bophelo,
– \(t \) = nako ea ho bola.
Ho tsoa potsong, hoa tsebahala:
– \( N_0 = 1 \) dimoleku \( = 6,022 \makgetlo a 10^{23} \) diathomo,
– \( T_{1/2} = 5,27 \) dilemo,
– \(t = 10,54 \) dilemo.
Kenya boleng bona sebakeng sa equation:
\[ N(10,54) = 6,022 \makgetlo a 10^{23} \cdot \left(\frac{1}{2}\right)^{\frac{10,54}{5,27}} \]
\[ = 6,022 \makgetlo a 10^{23} \cdot \left(\frac{1}{2}\right)^2 \]
\[ = 6,022 \makgetlo a 10^{23} \cdot 0,25 \]
\[ \hoo e ka bang 1,5055 \makgetlo a 10^{23} \]
Kahoo, kamora dilemo tse 10,54, ho sala diathomo tse ka bang \(1,5055 \makgetlo a 10^{23}\) tsa Cobalt-60.
Mohlala oa Potso ea 2: Ho Monya Mahlaseli a Gamma
Potso:
Haeba mahlaseli a gamma a kenella poleiting e teteaneng ea 1 cm, matla a bona a fokotsoa ka halofo. Ke botenya bofe ba poleiti ea lead bo hlokahalang ho fokotsa matla a mahlaseli a gamma ho isa kotara ea boleng ba eona ba pele?
Puisano:
Ho monngoa ha mahlaseli a gamma ke thepa ho latela molao oa Beer-Lambert, o reng:
\[ Ke = I_0 \cdot e^{-\mu x} \]
Di mana:
– \( I \) = matla a mahlaseli a gamma ka mora botenya bo kenellang \( x \),
– \( I_0 \) = matla a pele,
– \( \mu \) = coefficient ea ho fokotsa lebelo ka mola,
– \( x \) = botenya ba thepa e monyang.
Ho tsoa tlhahisoleseling ea potso:
Botenya ba \( x = 1 \) cm, \( \frac{I}{I_0} = \frac{1}{2} \).
Ho sebelisa equation ea Beer-Lambert:
\[ \frac{1}{2} = e^{-\mu \times 1} \]
Ho nka logarithm ea tlhaho ea mahlakore ka bobeli:
\[ \ln\left(\frac{1}{2}\right) = -\mu \]
E le hore:
\[ \mu = -\ln\left(\frac{1}{2}\right) \]
\[ \mu = \ln(2) \]
Re batla ho fumana botenya ba \( x \) hoo matla a fokotswang ho ba kotara:
\[ \frac{1}{4} = e^{-\mu x} \]
Nka logarithm ea tlhaho:
\[ \ln\left(\frac{1}{4}\right) = -\mu x \]
Sebelisa coefficient ea attenuation e seng e fumanoe (\( \mu = \ln(2) \)):
\[ -\ln\left(\frac{1}{4}\right) = -\ln(2) \times x \]
\[ \ln(4) = \ln(2) \makgetlo x \]
Kaha \(\ln(4) = 2\ln(2)\), joale:
\[ 2\ln(2) = \ln(2) \makgetlo x \]
x = 2 cm.
Kahoo, botenya bo hlokahalang ba poleiti ea lead ke 2 cm.
Ho koala
Ka mehlala e kaholimo, re ka bona kamoo mohopolo oa mahlaseli a mahlaseli a gamma o sebelisoang kateng maemong a fapaneng, ho tloha ho bola ha mahlaseli a kotsi ho isa ho monyeng ke thepa e tiileng. Ho utloisisa melao-motheo ena ea motheo ke mohato oa bohlokoa oa ho tseba lihlooho tse rarahaneng haholoanyane fisiks ea nyutlelie le ts'ebeliso ea theknoloji ea mahlaseli. Bakeng sa ba sebetsang lefapheng la bophelo bo botle, polokeho ea mosebetsi, kapa lipatlisiso tsa saense, kutloisiso e felletseng ea mahlaseli a mahlaseli a gamma e bohlokoa bakeng sa ho boloka polokeho le ho nepahala mosebetsing.
