What is the threshold energy for this reaction to occur

Assignment Help Physics

Reference no: EM13529170

The 19F(3He,3H)19Ne reaction has been used to study the levels in 19Ne that are important for astrophysical processes. Suppose that the 3He beam with energy of 24 MeV (in Lab frame) is bombarded on a 19F target with thickness of 1019 atoms/cm2. The beam current is 10 nA for the 3He beam (charge state 2+). The reaction product 3H particles with kinetic energy of 20.7 MeV (in Lab frame) are detected at a polar angle of 5 degrees (in Lab frame) by a detector that covers solid angles of 0.005 sr. A count rate of 10 per second is observed for the 3H particles.
(a) What is the threshold energy for this reaction to occur?
(b) What is its di?erential cross section measured at 5 degrees?
(c) What is the corresponding center of mass angle for the 5 degree Lab angle?

Reference no: EM13529170

Questions Cloud

Determine what is the time needed to take off : A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off

Which decay modes are possible : Which decay modes are possible?

Explain flame colours as an analytical technique : 1) Flame colours as an analytical technique: a) The principle behinde how this work

Why are standard conditions not used in biochemistry : How might a cellcouple two processes, from a chemical perspective? Why are standard conditions not used in biochemistry? Bespecific. What is the utility of Coenzyme A in metabolism?

What is the threshold energy for this reaction to occur : What is the threshold energy for this reaction to occur

Changes in gravitational potential energy : Design a spring that will give a 1140kg satellite a speed of 2.20m/s relative to an orbiting space shuttle. Your spring is to give the satellite a maximum acceleration of 5.00g. The spring's mass, the recoil kinetic energy of the shuttle, and ..

Small business program and source selection plans : Scenario from a government or a contractor perspective - Examine the purpose of the federal small business program to include a historical aspect of the government regulations that created the program.

Find out whether a solid forms when solution : Determine whether a solid forms when solution containing the following salts are mixed. If so, write the ionic equation and the net ionic equation. a) NA3PO4 and AgNO3 B) K2SO4 and K2S

What is the most important neurotransmitter : What is the most important neurotransmitter? Describe a biologicalprocess associated with the neurotransmitter. Everyone needs aunique process. What part in a sheep'sbody does mitosis?

User Account

All Pages