vault backup: 2024-09-16 16:25:47

1 Daily Notes/2024/9 September/2024-09-16.md

@@ -33,6 +33,7 @@ group by file.folder
 ```
 
 # Calendar Tasks
+-  Writing notes for week 3 of NUCE 2100 [startTime:: 15:00]  [endTime:: 16:30]
 -  Getting HW Assignments set up [startTime:: 10:00]  [endTime:: 10:35]
 - Taking Notes on NUCE Week 2 [startTime::10:36] [endTime:: 11:00] 
 -  Lunch [startTime:: 11:00]  [endTime:: 12:00]

300s School/NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-10 Module 3.md

@@ -60,6 +60,28 @@ Interactions happen pretty fast. 1 millionth of a second the toxic products are
 Doseage - Chronic and acute. Acute is generally worse because the body can't repair itself.
 **LD50/30:** Dose of radiation expected to cause death to 50 percent of an exposed population within 30 days.
 # Module 3.3 - Radiation Protection Standards
-Background radiation is normally pretty low. mSv range.
+Background radiation is normally pretty low. mSv range. Radon is the most potent natural cause. We have no idea what low dose radiation does.
+**No observable effects below 25 rem per year**
+>[!tip] Dose Reduction Principles
+>1. Time: Restrict Proximity
+>2. Distance: 1/r^2 loss
+>3. Shielding
+>
 # Module 3.4 - Estimating Radiation Dose Rates
-# Module 3.5 - Radiation Shielding
+Good example problems on calculating dosage. Different particles have different dose calculations.
+**Internal Exposure**
+Charged particles can be ingested -- this can be a massive problem. High LET particles can wreak havoc on internal tissues if ingested, as opposed to being blocked by dead skin.
+- Ingesting is referred to as radiation intake. 
+- Uptake is when the radionuclides cross the biological barrier.
+Once a radioactive atom is in the body, it'll keep being radioactive until it decays completely, or the body removes.
+Two things can be done - Prevention, and promotion of excretion.
+# Module 3.5 - Radiation Shielding
+Three main techniques:
+1. Absorb primary radiation
+2. Turn primary radiation into secondary radiation that's easier to absorb
+3. Absorb secondary radiation.
+Alpha and beta are super easy to absorb.
+Gamma and x ray, well not so much. Need an insane amount of shielding, and usually composite shielding at that.
+**Tenth thickness** Approximate amount of shielding of a specific material required to reduce a radiation dose by a factor of ten.
+$$ \frac{I}{I_0} = \left(\frac{1}{10}\right)^{\left[\frac{x} {x_{1/10}}\right]} $$
+I is intensity, x is thickness.

300s School/NUCE 2100 - Fundamentals of Nuclear Engineering/2024-09-17 Homework 3.md

@@ -1,9 +1,9 @@
 ---
 title: Homework 3
 allDay: false
-startTime: 15:00
-endTime: 18:00
-date: 2024-09-16
+startTime: 08:00
+endTime: 11:00
+date: 2024-09-17
 completed: null
 type: single
 endDate: null