A target is bombarded with a proton beam of current for to produce with an activity…

PHYSICS · Subjective · A Level · Physics · Nuclear physics · Nuclear physics

Problem

^{7}\text{Li}

target is bombarded with a proton beam of current

10^{-4}\,\text{A}

for

1\,\text{h}

to produce

^{7}\text{Be}

with an activity of

1.8\times10^8

disintegrations per second. Assuming that one

^{7}\text{Be}

radioactive nucleus is produced by bombarding

1000

protons, determine its half-life.