学籍番号科目名物質工学演習名前課題物理関連演習第 2 回

学籍番号
名
科目名
前
課
物質工学演習
物理関連演習第 2 回
題
別紙参考資料を参考にして，下線部分を和訳しなさい．ま
た，問題に答えなさい（日本語で良い）．
The net potential energy EN between two adjacent ions is
sometimes represented by the expression
EN = −
µ
¶
C
r
+ D exp −
r
ρ
(1)
in which r is the interionic separation and C, D, and ρ are
constants whose values depend on the specific material.
1. Derive an expression for the bonding energy E0 in
terms of the equilibrium interionic separation r0 and
the constants D and ρ using the following procedure:
(A) Differentiate EN with respect to r and set the
resulting expression equal to zero.
(B) Solve for C in terms of D, ρ, and r0 .
(C) Determine the expression for E0 by subsittution
for C in equation (1).
2. Derive another expression for E0 in terms of r0 , C, and
ρ using a procedure analogous to the one outlined in
part 1.
和訳：
解答：

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