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Poisson's and Gaussian distribution of radioactive decay with Cobra4 (Influence of the dead time of the counter tube
  • Poisson's and Gaussian distribution of radioactive decay with Cobra4 (Influence of the dead time of the counter tube

Poisson's and Gaussian distribution of radioactive decay with Cobra4 (Influence of the dead time of the counter tube

공유
모델명
P2520360
브랜드
PHYWE
판매가
견적 문의
배송비
￦2,500 / 주문시결제(선결제) 조건별배송
택배
방문 수령지 : 경기도 고양시 덕양구 향동로 194(향동동) DMC아미 지식산업센터 501호

 

Features
Principle
1) The aim of this experiment is to show that the number of pulses counted during identical time intervals by a counter tube which bears a fixed distance to along-lived radiation emitter correspond to a Poisson´s distribution. A special characteristic of the Poisson´s distribution can be observed in the case of a small number of counts n < 20: The distribution is unsymmetrical, i. e. the maximum can be found among smaller numbers of pulses than the mean value. In order to show this unsymmetry the experiment is carried out with a short counting period and a sufficiently large gap between the emitter and the counter tube so that the average number of pulses counted becomes sufficiently small.
2) Not only the Poisson's distribution, but also the Guassian distribution which is always symmetrical is very suitable to approximate the pulse distribution measured by means of a long-lived radiation emitter and a counter tube arranged with a constant gap between each other.A premise for this is a sufficiently high number of pulses and a large sampling size. The purpose of the following experiment is to confirm these facts and to show that the statistical pulse distribution can even be approximated by a Guassian distribution, when (due to the dead time of the counter tube) counting errors occur leading to a distribution which deviates from the Poisson's distribution.
3) If the dead time of the counter tube is no longer small with regard to the average time interval between the counter tube pulses, the fluctuation of the pulses is smaller than in the case of a Poisson's distribution. In order to demonstrate these facts the limiting value of the mean value (expected value) is compared to the limiting value of the variance by means of a sufficiently large sampling size.
What you can learn about
Poisson's distribution
Gaussian distribution
Standard deviation
Expected value of pulse rate
Different symmetries of distributions
Dead time
Recovering time and resolution time of a counter tube

 

 

 

Descripsion Code Q'ty
Radioactive source Am-241, 370 kBq 09090-11 1,00
Geiger-Mueller counter tube, type B, BNC cable 50 cm 09005-00 1,00
Plate holder on fixing magnet 09203-00 1,00
Base plate for radioactivity 09200-00 1,00
Cobra4 Mobile-Link 2 incl. accessories: battery, USB cable, charger and SD memory card 12620-10 1,00
Counter tube holder on fixating magnet 09201-00 1,00
Source holder on fixing magnet 09202-00 1,00
Software Cobra4 - multi-user licence 14550-61 1,00

 

 


  

배송안내

- 배송비 : 기본배송료는 2,500원 입니다. (도서,산간,오지 일부지역은 배송비가 추가될 수 있습니다)  100,000원 이상 구매시 무료배송입니다.

- 본 상품의 평균 배송일은 2일입니다. 설치 상품의 경우 다소 늦어질수 있습니다.

교환 및 반품안내

- 개봉으로 상품 가치 훼손 시에는 상품수령후 7일 이내라도 교환 및 반품이 불가능합니다.

- 저단가 상품, 일부 특가 상품은 고객 변심에 의한 교환, 반품은 고객께서 배송비를 부담하셔야 합니다(제품의 하자,배송오류는 제외)

- 일부 상품은 신모델 출시, 부품가격 변동 등 제조사 사정으로 가격이 변동될 수 있습니다.

환불안내

- 상품 청약철회 가능기간은 상품 수령일로 부터 7일 이내 입니다.

AS안내

- 소비자분쟁해결 기준(공정거래위원회 고시)에 따라 피해를 보상받을 수 있습니다.

- A/S는 판매자에게 문의하시기 바랍니다.

이미지 확대보기Poisson's and Gaussian distribution of radioactive decay with Cobra4 (Influence of the dead time of the counter tube

Poisson's and Gaussian distribution of radioactive decay with Cobra4 (Influence of the dead time of the counter tube
  • Poisson's and Gaussian distribution of radioactive decay with Cobra4 (Influence of the dead time of the counter tube
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