8048.0 eV energy X-ray 1 eV = 1.6022×10^(-19) J

8048.0 eV energy X-ray 1 eV = 1.6022×10^(-19) J

 

 

The specifications for a handheld XRF analyzer indicate that

the X-ray source emits photons with an energy of 8048.0 eV

(electron-volt; 1 eV = 1.6022×10^(-19) J).

What is the wavelength of these X-rays?

 

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8048.0 eV × (1.6022×10^(-19) J / 1 eV)

= 8048.0 × (1.6022×10^(-19))

= 1.28945×10^(-15) J

 

 

 

E = hν = hc / λ

( 참고 https://ywpop.tistory.com/4964 )

 

λ = hc / E

= [(6.626×10^(-34) J•s) (2.998×10^8 m/s)] / (1.28945×10^(-15) J)

= [(6.626×10^(-34)) (2.998×10^8)] / (1.28945×10^(-15))

= 1.5406×10^(-10) m

 

 

 

답: 1.5406×10^(-10) m

 

 

 

 

[참고]

1.5406×10^(-10) m × (10^9 nm / 1 m)

= 1.5406×10^(-10) × (10^9)

= 0.15406 nm

 

 

 

 

[키워드] XRF 분석기 기준문서, X-선의 파장 기준문서